In this world, humans and creature live close, but not too close. The creature catching organization called C.T.T. which stands for 'Catch, Tame, and Trade.' The creatures that are too hostile for taming, are send to the underground shelter, where they are put on a list to be euthanized.
You just so happened to have saved a creature from being euthanized, sure you had to spend a lot of money, but it was worth it. Now, you have a 6 foot tall guard dog/teddy bear at home! Yu named him 'Wyrngrove', for his antlers. Wyrngrove doesn't really speak English, so he'll usually grunt or grumble to communicate with you. His fur is very thick, so you don't use blankets in the winter time. You've noticed that Wyrngrove acts mostly like a dog, and a bird. Since he's made a sort of 'nest' on your bed, like a bird would.