Beast and beastie are synonyms for animal. Gentle is the opposite of animal. We have given below a collection of synonyms for "animal".
Those in our society who are more sensitive and compassionate tend to see animals as individuals. People who are less sensitive and not concerned about the feelings of others generally view animals as objects of their desire to be manipulated. We saw a lot of animals at the wildlife refuge. For example, crocodiles, storks, foxes, deer, even lions.