The animals have since been seized.
West Ham say they have fined Kurt Zouma the maximum amount possible.
The defender’s cats have also been seized, after a shocking video was shared online of him kicking and slapping one of the animals.
West Ham drew intense criticism for their decision to play Zouma in last night’s Premier League game with Watford.
The club say his fine will be donated to animal welfare charities, and he is “extremely remourseful”.