A woman brought her Yorkie in last month for what she described as "he's just been gagging a bit." The dog was eight years old, slightly overweight, and had been doing the characteristic honking cough — almost like a goose — intermittently for about six weeks. Tracheal collapse. She'd assumed it was something stuck in his throat.
That's a scene that repeats itself in my exam room constantly. Small dog owners are often caught off guard by the health conditions specific to their pets because, frankly, small dogs seem so sturdy. They're energetic, they live long lives, and their problems are easy to dismiss as quirks. But toy and small breed dogs — Chihuahuas, Yorkies, Pomeranians, Maltese, Toy Poodles, Papillons, and the like — carry a distinct set of vulnerabilities that deserve attention.
These breeds face dental disease from crowded jaws, luxating patellas, tracheal collapse, liver shunts, and hypoglycemia, particularly in puppies. Their longer lifespans mean chronic conditions can require a decade or more of management, but with proper care, many small dogs live well into their mid to late teens.
Dental Disease: The Number One Problem Nobody Takes Seriously Enough
I'm going to be direct about this. Dental disease in toy breeds is pandemic, and it's the condition I see most often that owners have been ignoring or minimizing.
Small dogs have the same number of teeth as large dogs — 42 adult teeth — packed into jaws a fraction of the size. That means crowding, overlapping, and retained baby teeth (which should have fallen out but didn't) creating pockets where bacteria thrive. Tartar builds up faster. Gum disease progresses faster. By age three, the majority of small breed dogs have some degree of periodontal disease.
And periodontal disease isn't just about bad breath. The bone supporting those teeth erodes. Roots become exposed. Teeth loosen and fall out. In severe cases — and I see this several times a month — the jawbone itself becomes so weakened that it fractures. A pathologic jaw fracture in a six-pound Chihuahua is devastating.
One Maltese I treated had been eating wet food for two years because his teeth hurt too much for kibble. His owner hadn't connected the dots. By the time he came in, he needed 14 extractions and had bone loss along most of his lower jaw.
Preventive dental care in small breeds isn't optional — it's structural maintenance. Daily tooth brushing (genuinely daily, not when you remember), annual professional dental cleanings under anesthesia, and monitoring for signs of oral pain. Some toy breeds need cleanings every 6-8 months instead of annually. For related context, see brachycephalic breed health: bulldogs, pugs.
Patellar Luxation: The Kneecap That Won't Stay Put
If you've ever seen a small dog skip a few steps while running, lifting a hind leg briefly before setting it back down, you've probably watched patellar luxation happen in real time. The kneecap slides out of its groove, the dog adjusts, and it pops back in.
This is graded on a scale of I to IV:
- Grade I: Kneecap can be manually pushed out of position but returns on its own.
- Grade II: Kneecap occasionally slips out during normal movement but goes back. This is where most dogs I diagnose fall.
- Grade III: Kneecap is out of place most of the time, can be manually repositioned but slips again.
- Grade IV: Kneecap is permanently displaced. The dog's gait is visibly abnormal.
Grades I and II can often be managed conservatively — weight management, joint supplements, controlled exercise. Grades III and IV usually need surgical correction. The surgery has good success rates, but it's a real procedure with real recovery time.
I've changed my mind somewhat on when to recommend surgery. I used to wait until there were clear signs of pain or arthritis developing. Now I'm more inclined to intervene earlier for Grade II cases in young dogs, because the longer the kneecap tracks abnormally, the more cartilage erosion occurs. But it's a case-by-case decision.
Tracheal Collapse
The trachea is held open by C-shaped rings of cartilage. In some toy breeds — Yorkies, Pomeranians, Chihuahuas, and Toy Poodles especially — those rings weaken and flatten over time. The trachea narrows, and the dog develops that distinctive honking cough, especially during excitement, after drinking water, or when pulling against a collar.
This is a progressive condition. It doesn't get better on its own, and it can't be reversed once the cartilage has deteriorated. Management involves weight control (a lean dog has less tissue pressing on the trachea), switching from a collar to a harness, avoiding triggers like smoke and dust, and medications to reduce coughing and airway inflammation.
Severe cases may benefit from tracheal stent placement, where a mesh tube is inserted to hold the airway open. It works well in many dogs, though stent migration and granulation tissue formation are potential complications. Yorkshire Terrier health articles often focus on this condition because Yorkies are one of the most commonly affected breeds.
The single most impactful thing owners can do? Ditch the collar. A harness distributes pressure across the chest instead of the throat. I can't count how many small dogs I've seen whose chronic cough improved substantially just from making that switch.
Portosystemic Liver Shunts
This one is less common than dental disease or luxating patellas, but it's serious enough that small breed owners should know about it. A portosystemic shunt (PSS) is an abnormal blood vessel that bypasses the liver, allowing toxins that the liver would normally filter to circulate through the body.
Yorkies are the poster breed for congenital liver shunts, though Maltese, Havanese, and other toy breeds are also affected. Signs often appear in young dogs: poor growth, vomiting, disorientation after eating (especially protein-rich meals), and unusual behavior like head pressing or aimless circling.
Some shunts can be surgically corrected — the abnormal vessel is gradually closed, forcing blood through the liver as intended. Others are managed medically with diet modification (lower protein to reduce ammonia production) and medications. The prognosis depends heavily on the type and location of the shunt.
I diagnosed a liver shunt in a five-month-old Maltese last year who was smaller than her littermates and would get "drunk-looking" after meals. Surgery went well, and six months later she was a completely different dog — growing normally, sharp and alert.
Hypoglycemia in Toy Puppies
Tiny puppies have almost no fat reserves and very small livers, which means their ability to maintain blood sugar between meals is limited. Toy breed puppies — especially those under four pounds — can develop hypoglycemia from missing a single meal, being too cold, or being overly stressed.
Signs include lethargy, trembling, wobbliness, and in severe cases, seizures or collapse. The fix is straightforward if caught early: a small amount of sugar water, honey on the gums, or a high-calorie nutritional gel, followed by a meal. But if it progresses to seizures, it becomes an emergency requiring veterinary intervention.
Toy breed puppies should eat 3-4 small meals daily until they're at least four months old. Some very tiny puppies need even more frequent feeding. And they should be kept warm — hypothermia and hypoglycemia compound each other.
The Long-Life Advantage and Its Flip Side
Small dogs live longer. A healthy Chihuahua can reach 15-20 years. Toy Poodles and Dachshunds often make it to 14-16. That's a wonderful thing — more years with your companion.
But it also means more years of managing dental disease. More years of joint supplements for luxating patellas. More years of monitoring tracheal collapse. And eventually, more years of dealing with age-related conditions like heart murmurs (mitral valve disease is extremely common in elderly small breeds), breed-specific health issues that compound as the years accumulate, and cognitive decline.
Budgeting for veterinary care across 15+ years is something small breed owners should plan for. The annual costs may be lower than for a giant breed in any given year, but the cumulative total over a lifespan often evens out.
Frequently Asked Questions
Why do small dogs shake so much — is it a health problem?
Shaking in small dogs has several causes: cold (tiny bodies lose heat fast), excitement, anxiety, and low blood sugar. If your small dog shakes persistently, especially when it's not cold or exciting, it's worth a vet check. But occasional trembling in a Chihuahua during a thunderstorm is more about the breed's reactive temperament than a medical condition.
Do toy breed puppies really need special food?
Yes, and I say that without reservation. Toy breed puppy formulas are designed with smaller kibble sizes for tiny mouths, higher calorie density (because small puppies can't eat large volumes), and nutrient profiles that support their faster metabolism. Feeding a toy breed puppy food designed for medium or large breeds can lead to nutritional imbalances and doesn't address the hypoglycemia risk that comes with tiny body size.
My small dog has a Grade II luxating patella but seems fine. Does he need surgery?
Maybe not now, but monitor it closely. Grade II patellar luxation in a young, lean, active dog can remain stable for years. The concern is progressive cartilage wear — every time that kneecap slips, it erodes the groove a little more. If your dog starts favoring the leg more frequently, becomes less willing to jump or play, or develops obvious lameness, surgery should be reconsidered. Annual orthopedic checks help track progression. Weight management is the single best thing you can do to keep a Grade II from becoming a Grade III.