13 Most Common Diseases Found In Jack Russell Terriers

2. Cardiomyopathy


Cardiomyopathy is a weakening of the heart muscle that often involves a thickened heart but can also involve dilation of the chambers (or stiffening of the muscle).

Unfortunately, there are rarely any early signs of cardiomyopathy, and you are more likely to notice it in your Jack Russell once the disease has become more advanced.

Since the complications include pleural effusion and pulmonary edema (i.e. water in the chest cavity or in the lungs), you may notice your dog breathing more quickly or in a way that seems labored.

You should also be wary of cardiomyopathy if you spot reduced tolerance to exercise.

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6 years ago

We have a 12 year old Jack Russell Terrior and lately he seems disoriented and sometimes slowing down. He doesn’t jump up on couches or bed alot like he used to, and he always wants to be in his cage (which is very unusual). He is still eating very good and is in good shape – weights 15 lbs. vet says is perfect. I am concerned because he does get confused at times, he seems bored to me. We did move from a beautiful house in Buffalo 1 year ago and now we live in a manufactured home in Florida.… Read more »

6 years ago
Reply to  patches

My Jack Russell is doing the same exact thing.😢😢 I have to take him into the vet. He’s been lazy lately and in his cage. The littlest things startle him

3 years ago
Reply to  Tasha

Mine too. He is 11 years old. I think this behaviour is normal as they start getting older.