Dog Attacks Shark

Recently a pair of dogs were filmed swimming with the sharks in Australia.  One of the dogs suddenly dives under the water and appears to bite one of the sharks. What do you think?  Did the dog bite the shark?  Is there going to be a new movie called "Paws". "Just when you thought it was safe to go back into the water!"

Here is a 2nd video of a dog attacking a shark. This time the dog drags the shark to shore.