It is a common complaint, especially amongst active hunting dogs. In my veterinary practice, most calls concern Labrador Retrievers although it can happen to any dog, most recently Springer Spaniel Trixie of thorn-in-foot fame.

This dog's tail is being carried at an odd, limp angle, and the normally happy canine has a guarded, uncomfortable expression.

Here is the most common scenario. A typically happy pet dog suddenly won't wag his tail. It dangles limply between his legs almost as if he is ashamed of some "bad dog" act. He may not eat (an über-odd change in most of these dogs), and he might be hesitant about defecating or urinating. He may be unwilling to jump onto the bed or couch, yet wants nothing more than to sleep all day. The hair on his lower back--his hackles--may be raised. And if you touch or lift his tail...? Whoa boy! Ouch! The stoic dog who never complains about anything often reacts dramatically to manipulation of a "limber tail."

An investigative probe into the mystery surrounding a dog's sore tail usually reveals the dog was extremely active within the previous 24 hours. Swimming (especially in cold water), hunting or hard playing are usually reported prior to onset of symptoms. The dog may act completely fine following the activity and then wake up the next day feeling miserable. I liken it to feeling stiff in muscles you never knew you had in the days following a new exercise regimen.

Medically speaking "limber tail" results from damage to the coccygeal, or tail, muscle fibers due to overuse. Rest and anti-inflammatory therapy may speed recovery (NEVER give your dog pain medication without first consulting your veterinarian), but most dogs improve on their own anyway within a few days to a week. Future recurrence of the injury is not a foregone conclusion even though most of these dogs happily resume the types of hyperactive exercise that caused the problem in the first place.

There are other potential causes of back-end misery and dangling tail including tail fracture, lower back pain from disc herniation or arthritis, impacted anal glands or prostate disease. If your dog suddenly shows symptoms of decreased appetite, reluctance to move and a dangling tail, it is wise to check with your veterinarian to be sure something more serious is not afoot before chalking it up to an athlete's sprain.

Most cold sore sufferers contracted the virus in early childhood (often before the age of seven). Approximately 80% of Americans have been exposed to HSV1. Similarly, FHV1 infections are usually acquired during kittenhood with 80% of the cat population being affected.

HSV1 is spread from person to person through kissing or through sharing drink glasses, utensils, lip gloss, toothbrushes, and so on. Self-infection, or spread from a primary oral location to other parts of the body (eyes, fingers, etc.), can happen by touching the sore and not washing hands properly. Yikes! In cats, FHV1 spreads by direct contact with infected ocular or nasal secretions. The virus can be transferred on a caretaker's clothing or inanimate objects (this is called "fomite" transmission) from sick cats to healthy ones which contributes to herpes virus epidemics in humane societies and shelters. Unlike Kennel Cough in dogs, feline herpes is unlikely to spread far through aerosolization of virus via sneezing or coughing.

Symptoms of feline herpesvirus include fever, sneezing, nasal discharge and conjunctivitis in the eyes. Some cats are left with permanent damage in the affected eye with reduced vision from scar tissue. Occasionally infection in the eye is so severe that surgical removal of the eyeball is required!  Bacterial infections secondary to the feline herpesvirus are common causing secretions to become thick and greenish. Pneumonia is uncommon but possible.

Cold sore symptoms begin as a tingling in the skin then progress to blistering and then a scabby wound. Cold sores usually occur around the mouth but can affect the nostrils, chin, cheeks and even eyes. Interestingly, I just learned that cold sores are not canker sores! Canker sores are non-contagious ulcerations affecting the lips and soft tissue inside the mouth caused by stress, injury, allergy or bacteria.

If you've ever suffered from a cold sore you understand that it tends to reappear in the same spot each time and often emerges during times of stress or illness. This is because, unlike romance, herpes lasts forever. Seriously. Once infected, the body begins fighting a guerrilla war it can't win. The virus goes into hiding or hibernation on a particular nerve pathway until it senses weakened immune defenses resulting from another illness, exhaustion or injury. Then it creeps to the skin surface to wreak havoc and reproduce.

Many adult cats brought into my veterinary clinic for evaluation and treatment of a "cold" actually are showing reappearance, or "recrudescence," of their herpes virus. In cats, anything from the stress of a new family member to serious organ failure can lower the immune system awakening the latent herpes virus. I have found that treating the underlying problem in these cats hastens their recovery from the viral upper respiratory infection.

Fortunately for cats, vaccination against FHV1 (also called feline rhinotracheitis) is available to lessen  severity of symptoms as well as reduce the spread of the virus. Vaccination for FHV1 is usually given as part of a combination "distemper" vaccine, which includes protection against several other feline diseases. There is no vaccine available to prevent or lessens symptoms of cold sores from HSV1 in people.

Because herpes is a virus, antibiotic therapy is unnecessary and inappropriate unless a secondary bacterial infection has developed. Duration of a cold sore outbreak can last 8-12 days in people. Several special ointments have been developed to shorten the duration of the outbreak. Healthy living, sun protection and immune boosting supplements may help prevent recurrence.

I have seen symptoms of feline herpes virus drag on for weeks to months. A non-resolving upper respiratory infection in a cat may be a warning sign of an underlying illness or lowered immune system. Unfortunately, some severely affected cats are left with permanent damage in their eyes and nasal passages that predispose them to a lifetime of weepy eyes, gooey noses and frequent bacterial infections. Several of the anti-viral medications available for humans have been used to treat feline herpes virus infections: some can be effective while others cause serious side-effects. Never give your cat any human medication without first checking with your veterinarian! L-Lysine is regularly used in cats to inhibit replication of the virus and speed recovery. While L-Lysine is available over-the-counter, check with your veterinarian for dosing instructions.

People often suggest to me that their cat gave them a cold (or vice versa), but this is highly unlikely. While cats and humans may both be plagued by a herpes virus, subtle genetic differences between the different strains dictate which animal can be infected and how. So if you come down with a cold sore, please don't blame your kitten--even if you have been planting lots of kisses!

For the Birds…or Maybe Not

Posted on April 2, 2013 by Rebekah

During the spring and summer seasons many of our bird friends are very busy building nests.  Sometimes our porches, light fixtures and outdoor decorations can be as appealing to bird families as the neighboring trees.  If you don’t mind using your back door for a couple of weeks you can enjoy watching the busy pair build their nest, lay eggs and raise their young.  If you would rather they not take up residence under your roof, there are a variety of ways to let the nest builders know your house is not open for birdy renters.

Please avoid Bird Repellent Gels, Pastes or Sticky Strips.  These products are marketed as non-toxic and safe for birds.  Here is an excerpt from one product, “A non-toxic, tacky bird repellent gel.  Can be used on ledges, sills, beams, rafters, signs, statues and hundreds of other outdoor surfaces to prevent pest birds from roosting. The gel does not harm birds – it simply makes surfaces uncomfortable, intimidating and uninviting.”  The reality is these products are not safe and do cause often deadly harm to the unsuspecting birds.  The sticky material coats the bird’s feet and any feathers it comes in contact with.  Small birds often struggle to the point of exhaustion to free themselves while larger birds may lose their ability to fly as a result of the glue on their feathers.  Despite what the label says, these products harm birds and are not safe!

This adult Eastern Screech Owl landed on a surface coated with one of these bird repellent gels.  He could not open his wings or his feet and would have likely starved had he not been found by a concerned home owner.  This little owl will be at the Aves hospital for several weeks while he molts out the sticky feathers and grows in new.

Bird Safe Alternatives:

Wedge a tennis ball or two in between the house and your outdoor light fixtures to keep your lights bird nest free.

Use ½ x ½ inch hardware cloth to close off any openings along the soffits, eves or under open porches of your house.

Use an angled piece of cardboard over ledges.

These items can be safely removed when the pair takes up residence elsewhere and does not cause any damage to your home or to the birds.

Flash forward a decade and I find myself, now an animal doctor, doling out this same information to dog owners on a regular basis. Finding microscopic coccidia eggs on an annual fecal float test is not uncommon. Dogs may pass Isospora or Eimeria eggs in their stool, but as with goats these coccidia parasites are "host specific." As I explain this to horrified pet owners, they are relieved to hear it is not contagious to them or their children.

A small sampling of the oodles of eggs -- coccidia, not Easter -- being passed by two sick bunnies I saw this month.

Identifying the presence of coccidia is easy. Now here's where it gets tricky. Remember that coccidia are "host specific." If a dog tests positive for an Isospora-type coccidia it may require treatment because Isospora is a dog coccidia. But if an Eimeria-type coccidia is seen, the dog is simply pooping out the coccidia that a rabbit once pooped out. Quickly differentiating between Isospora from Eimeria based on subtle differences in size or ornamentation takes practice and experience. Nevertheless, seeing as nibbling rabbit poop is a pretty common canine past time, chances are pretty good that many dogs are pooping out a non-canine coccidia.*

Many animals host coccidia without any outward signs of illness. In fact, sickness generally occurs only in very young animals during times of stress. As in my goat kid, coccidiosis may cause severe diarrhea. My yellow Labrador developed screaming diarrhea a few days after we brought him home as a puppy thanks not only to Isospora spp. but also to the stress of leaving his litter. Some of my canine patients--puppy or adult--that test positive for coccidia have unexplained scooting or butt licking without abnormal stools. A short course of treatment for coccidia often relieves all these symptoms.

I recently examined two very young bunnies with diarrhea and lack of appetite. These baby bunnies had been turning up their twitching little noses at hay and pellets for several days, eating nothing but carrots (a treat, not a balanced meal). The day I examined them they had been passing liquid orange stool for several hours. Not having had an occasion to test a pet rabbit's stool before, I was unsure of what I would find. Imagine my surprise when I focused my microscope on the fecal float slide to find hundreds of oval eggs. Coccidia! Eimeria-type no doubt. Treatment with anti-coccidia medication--a teeny tiny portion of the average dog dose--was started immediately, and the owner decided to provide additional nursing care at home.

What fascinates me about this case is not so much identifying rabbit coccidia -- as I explained, we veterinarians see it all the time as an incidental finding on canine fecal floats. It's just that I had never seen so much of it in one place. And never had I paused to think about what the rabbit coccidia might do to the rabbit! The story of these two very sick baby bunnies overwhelmed by coccidia has given this parasite a face and personal meaning to me.

* Cats can be infected with or shed coccidia in their stool as well including various species of Isospora or Eimeria which are not contagious to people. 

Posture of a cat straining to urinate, a medical condition requiring urgent attention.

Today's blog is not about litter box avoidance due to urinary tract infections, bladder inflammation caused by crystals or stones, irritable bowel syndrome, or systemic disease (such as kidney failure or diabetes). These often treatable conditions are diagnosed by urine, stool or blood tests and imaging studies (e.g., "x-rays," ultrasound) and should always be considered if a previously well-trained feline starts "having accidents" around the house.

So what if your cat truly has a behavioral condition that causes him to abandon the litter box? Cats are fastidious creatures. If something about their litter box is not to their liking they may simply stop using it. My clients often protest that they "haven't changed a thing about the litter box yet suddenly their adult cat won't use it!" A veterinarian professor of mine put it like this: a toddler in toilet-training has no qualms about dropping her pants on the side of the road to use her potty chair when the urge hits, but a teenager wouldn't dream of it! Likewise many cats will tolerate less than ideal litter box setups for years before one day demonstrating that "enough is enough" by peeing or pooping in a preferred location.

Unfortunately what seems like a great litter box set up to the pet owner may be repugnant to the kitty. Consider the following:

Hiding a litter box in a planter seems like a good idea to a person but breaks Cat Rule Number 1.

1. Your Personal "Porta-Potty." Would you really accept a "Porta-Potty" as a replacement for your home's spacious bathroom complete with ventilation fan? A covered litter box is the equivalent of a public portable toilet. Your meager human sense of smell recoils at the ammonia odor trapped inside. Just imagine how your feline's exceptional sniffer responds!

2. Grand Central Station. For some reason whenever I think about overflowing litter boxes I recall Weird Al Yankovic singing about cleaning "all the bathrooms in Grand Central Station with [his] tongue" in his anti-love song "One More Minute". I'll bet some of you have backed out of a filthy public restroom with a full bladder. I've even met people who won't use an otherwise clean but unflushed public toilet! Is it any wonder then that your cat would rather urinate on a rug than in a litter box that has old waste in it? Litter box waste should be scooped at least daily. The entire box may need to be emptied, cleaned and refilled every one to two weeks.

3. A Very Brady Bathroom. Imagine six kids sharing one bathroom. The inherent conflict is the stuff of which classic Hollywood sitcoms are made! Why then do we think six cats should be forced to share one litter box -- even uncovered and kept immaculately clean? The rule of thumb for litter boxes is "one litter box per cat plus one." Therefore, if you have two cats you should have three litter boxes. And if you're doing the math that means a single cat household should have two litter boxes! To reduce potential inter-cat drama these multiple litter boxes should not be lined up in a row like stalls in a high school lavatory. Also, try to place the boxes on different levels of the home. After all, how would you like to trek from your upstairs bedroom to the basement bathroom in the middle of the night?

Admit it. The basement can be a scary place. Even for cats -- especially if their only bathroom is right next to a hissing water heater.

4. Location, location, location. Toilets do not belong in the kitchen. Avoid placing your cat's litter box right next to where you feed him or where he sleeps. (A possible exception to this rule is for the cat who is being nursed through a weakening illness or post-surgical recovery.) A popular spot for the litter box is the basement or mechanical room.  All it takes is the sudden whoosh, whir, or clunk of a furnace, washing machine or other appliance to scare the bejeezus out of a cat settling down to business, and there you have it -- a future litter box avoider.

5. More on the Super Sniffer. Pysch's Burton Guster is not the only one with an exceptional sense of smell. Scent-sensitive people abound. I've had clients whose pet's file was flagged with the note "Remove air fresheners from room prior to appointment! Allergic!" The average cat's sense of smell is said to be about 14 times as strong as the average human's. The "extra fresh" odor controlling kitty litter that appeals to you may knock the socks off your cat. Research shows that most cats prefer soft, sandy litter with no added smells. In fact, any change in litter away from what your cat prefers can cause litter box avoidance. You can skip plastic pan liners (most cats hate them) but make sure you keep 1 to 1-1/2 inches of litter in the box (more is not better here).

6. It's a Cat Thing. When we put ourselves in our cat's "shoes" it is easy to see how the cleanliness and location of litter box can positively or negatively affect his willingness to use it. But some litter box problems stem from feline feelings with which it is hard to identify. For example, most of us do not urinate on objects to claim ownership of them. Nor do we tend to urinate in odd places just to get someone's attention. Territorial scent marking, especially by intact male and female cats, can flare up with the introduction of a new pet, with changes within an established feline family's social structure, or even with the visitation of an outdoor stray merely seen, heard or smelled outside the window! Some cats reportedly urinate or defecate outside the box while staring pointedly at their person as if to say, "Hey, there is something wrong here. Get me some help." It's hard not to get mad, but take a second and listen to your cat when this happens. Then call your veterinarian on his behalf.

An entertaining and enlightening resource for additional litter box management tips is The Fastidious Feline: How to Prevent and Treat Litter Box Problems by Patricia B. McConnell, Ph.D.

Snickers Liner

Our March Pet of the Month is Snickers, a 5-month-old Cockapoo (that is, Cocker spaniel-poodle mix) who proves big personalities come in small packages. This fluffy puppy greets you with a smile and knows how to snuggle like a champion--even in the unfamiliar setting of the veterinary hospital! Thank you Liner family for sharing your sweet Snickers with us!

Years ago a senior-aged female indoor-outdoor kitty (let's call her Claire) was brought to the veterinary clinic where I worked because she had recently begun sneezing and gagging. Her breathing was ragged and she was reluctant to eat. She looked absolutely miserable. Her examination suggested a upper respiratory infection possibly with secondary pneumonia. It was clear she had an infection, but her symptoms were strangely severe and sudden. 

A post-operative photo of Trixie's paw with a  drain in place. Note the size of the thorn compared to a penny! Next to the thorn is a fleck of thorn material similar to what the owners noticed at home.

One day Trixie's owners noticed a fleck of black foreign material oozing from between her toes and we bit the bullet on surgery. As I cut into the blisters, a small amount of pus and a lot of scar tissue met my scalpel blade. Another fleck of black material oozed out. I dug deeper and suddenly bumped into a firm black object. I grasped a visible portion with a forceps and pulled. And pulled. And pulled! Finally, a thorn the size of a small twig emerged! Trixie is now recuperating from surgery, and our biggest challenge will be keeping her quiet long enough to allow the wound to heal. 

* Name changed to protect privacy.

Turbo Lind

Turbo is a Christmas miracle kitty! He was delivered to his family's doorstep Christmas Eve with huge gashes on his shoulder from some kind of animal attack, dehydrated, undernourished and near death. Turbo's human mom gritted her teeth, cleaned his wounds and nursed him back to health. He is now a spit-fire kitten in good health enjoying the love of the Lind family!