Continuity: When Turner is on stakeout with Hooch, Turner is wearing glasses when he tastes the dog biscuit. When he feeds the biscuit to Hooch you can see his glasses on the dash. He then puts them on again in the next shot.

Continuity: When Turner is taking Hooch to see the vet and he is running alongside the car, on the long pole with his leash dangling behind him. In some shots the leash is secured to his collar and in others it is just loose.

Factual error: When Turner crashes he car into the wall, his attacker goes through the windscreen, and the windscreen explodes into pieces. This is impossible as windscreens are laminated.

Continuity: When Hooch is pulling against the leash and yanking the desk towards the stairs, the leash is connected to the non-choke chain on his collar. In all previous shots it was in the choke chain of his collar.

Continuity: Turner goes to see the old man and brings Hooch a muffin as a gift. Hooch knocks Turner down and the muffin goes flying and lands upright. When Hooch goes to get the muffin, it is laying on its side.

Audio problem: When Turner is playing with Hooch in his living room, Hooch is chasing Turner and barking at him. However, the audio of the barking is way out of sync with any movements of Hooch's mouth.