My parents used to breed dachshunds... Epileptic, bad teeth, throw their back out easily, heart problems, i would say 1 in 3 needs a c-section. All of them need assistance whelping.
Delicate spoilt f***ing things.
I met a long haired one once, called Norman. Robust and healthy and a great temperament. But otherwise every single one (of which there were many, since I worked at a city vet) was bad tempered, delicate and prone to all sorts of shitty health conditions. Why the hell the breeders are allowed to produce stock like that is beyond me.
My parents did their damndest to produce healt