I also saw a fight between Husky and Pitbull on the street. You can find the video on youtube.  Poor Husky. Many people could not separate them. Someone used a stick to open up jaws of Pitbull. Then you see a young wolf fighting a Pitbull and the wolf wins. Not only the wolf wins wolves have a stronger bite than Pitbulls.

@srdceleva  was right. Wild animals (predators), in general, are stronger than domestic animals for several reasons. 

The force of a bite and size do not always correlate.For example, there are four big cats : lions, tigers, leopard, jaguars. The strongest bite belongs to Jaguar. It’s so powerful it crashes the skull of a crocodile. Jaguars hunt on crocs around their own size.