Maks the dog loves our cats, and sometimes gets to play with them. Especially Summer and Bagheera is not afraid of him and can enjoy a playfight every now and then. Summer is the only one actually attacking his weak point - his long legs. There's no claws or biting involved in this film, on the contrary: notice Maks laying flat down on the floor, trying to be as little as he can be. He and Summer are just playing.