I took Killer out to play with Boo and Yoda today, and after playing with a guava, he charged Yoda.
Yoda was a good sport. He played with Killer for a while, and just let the little puppy do whatever he wanted to.
Boo was less tolerant. He played with Killer for a little bit, but when the puppy started to get hyper, Boo gave him the one-two-neko punch! Killer whimpered for a bit, but went right back to playing with Yoda.