Had to use my Allstate coverage on a 'rescue dog' I had once.  

He slipped his collar and leash and almost  gutted the neighbor's dachshund.  About $450 worth of vet bills saved the doxy.

Allstate covered it all; no deductible and I still have the same policies over 30  years later.

Later, the same dog tried to attack a person so I had to have him put down.