Akita vs Rottweiler

The AKC's own breed standard warns that Akitas 'may be intolerant of other dogs, particularly of the same sex' — that's not a rare temperament quirk, it's written into the official standard, and it's a major reason the breed is refused or surcharged by roughly 4 in 5 home-insurance breed-restriction lists.

Rottweilers carry one of the highest bone-cancer risks of any breed — a UK veterinary study found them roughly 27 times more likely to develop osteosarcoma than crossbred dogs — and their size and guarding instinct mean home insurance restrictions and breed-specific legislation are a real practical concern most breeds don't face.