Don't look at me that way—I wanted a giant cat.
The giant dog is slobbering all over the furniture and the woman is looking to the man for help. The problem here is clearly the size of the dog --- if it were normal sized, it wouldn't be a problem. But, the man fails to recognize that the size is the problem instead attributing their current predicament to the fact that its a dog. It's additionally partly funny because of the tension between cat people and dog people.