From Fish Hooks Wiki
Anthony is a ferret and the current boyfriend of Pamela Hamster.
He met Milo at Jason's ferret party, and asked if Milo, who was stuffing crackers into a plant after bringing crackers because he thought the party was a "parrot", if he needed some help with the plant. Anthony then smashed the plant and the plant pot then walked off with Pamela. ("Bea Sneaks Out")