Getting exercise from walking a dog provides many benefits.
Do you have dogs?  We have three, but they are small.  Walking too far with them results in carrying them back to the car.
I do.   I find it amazing all the varieties from millenia of selective breeding.
It's kinda funny.  My husband says that all the mixed breeds now, like the chi-weenie, used to be mutts - now they are pricey specialty dogs.
The sad thing is that in the past we would have called them mongrels or mixed-breed.
Yes, but they are much more expensive to own now.  However, they are highly sought after and they are bred better as well.
The funny thing is, intentionally bred dogs often suffer from genetic health problems.
I think it does depend on the care of the owners and how often they rotate the breeding pairs, etc.. some can be good.