My daughter tried to rescue a squirrel that was hit by a car once when she was young. She got bit for her efforts.
If this guy gave mouth-to-mouth he is lucky the critter didn’t eat his lips off of his face. A cat will dispatch a squirrel quickly, but small dog has fight on his hands. Once he runs those chisels through the dogs lips it is over. Now, a bigger dog will win, if he can catch the squirrel.