Spike

From Tom and Jerry Wiki

Spike is a gray bulldog that appears in many episodes of Tom and Jerry. He hates Tom because in the episodes that Spike appears, Tom is chasing Jerry around but ends up giving Spike or his son, Tyke a bad day. Obviously, whenever Spike tells Tom not to do a certain thing (ex. dirtying Tyke), Jerry does his best to get Tom in trouble (in the example, Jerry would get Tyke as dirty as possible). [[Wikipedia:John Goodman|John Goodman]] voiced him in Tom and Jerry 5: Enter the Toontown through Tom and Jerry 12: Return to the Medieval Island.