Dirty Little Secrets
DiNozzo always thinks everyone’s keeping secrets from him. If he ever sees Riley and Malley together in a position that implies they are talking, he’s running toward them at break-neck speed to find out what’s being said. If he doesn’t like it, the claws come out.
Sometimes Riley and Malley attack him because of his epilepsy. He smells different (medication side effect) and he twitches funny (e.g. has seizures), so he unnerves them. But sometimes the three cats get into it because honestly, DiNozzo asks for it. He taunts them. Sort of like in these photos. 😉