Wild animals on the loose!!!

image-1460729096090.png so yesterday i finally build my first deathclaw cage( i Also have a Yao guai cage). i caught one then i let it roam because i have that pacifier thing turn on the game and i goto sleep. Next time i hop on theres a handful of deathclaws there and there all agitated. fast travel away i come back there gone. Later fast travel to the island again and i'm mauled by a bunch of Yao guai. whats going on?'