I don't know if I would call this bizarre but it was certainly sad. An epic had just made its way over to my nest but wasn't attacking, it kept roaring at my creatures but hadn't yet done anything. A baby version of my creature, which was very cute, picked up a stick and threw it at the epic. The epic seemed unaffected and immediately killed the baby, before leaving the rest of my nest alone. There was something very sad about seeing this cute little creature make a valiant yet futile attempt to defend its people.
Also, one time I was playing as an aggressive creature and was chasing a weak creature back to it's nest where I was sure to get an easy lunch and a cakewalk time of killing off the race. Just as I get there they all wrapped themselves in these ugly, green, pulsing cocoons. I waited for quite some time for them to exit the cocoons, and when they did, they were much more deadly creatures that promptly kicked my ass.