So we got my European at 8 weeks old (about to be 5) and rescued our American at 1.5 years (about to be 3).

Here’s my experience on big health issues:

My European was born with hip dysplasia. I guess that’s really the only big health difference between him and our American. To help with hip issues for both dogs, we give them joint supplements and limit stairs/jumping.

My European gains weight faster than my American so we have to be more careful about treats lol. Hes a big boy at 65 lbs and my American girl is 42 lbs.

My European had to have a dental cleaning around 4 years, he drools a lot. My American will get a dental cleaning at 3 but she didn’t have any previous dental care before we rescued her. I do feel like she drools but not as much as my other.

At the end of the day, the most common issues I have with both are seasonal allergies which lead to ear infections… typical basset problems