Humphrey, an 8-week-old Bulldog, is taking on a formidable opponent.

But despite his tough-guy barks and challenges, the water bottle just isn’t engaging with him. Maybe he’ll give up — but we hope not! 

(And if you like Humphrey, we bet you’ll love the recent video of a French Bulldog puppy who battles the resident cat for his bed.) on Vetstreet: