I have an Akita Mix (yes, he's 110 lbs) and he is aggressive towards strange dogs and cats. I feel for this guy because his dogs have simply gotten out. If Sam (my dog) were to get out, the first cat he can catch is lunch. He will fight with a bigger dog, and he's not entirely interested in small dogs. But I mean accidents happen and it's unfortunate that two incidents happened within such a short time period. Hopefully the issue will be resolved, maybe by better fencing.