Extreme parts of biomes that you need certain pets to survive in

For an example- in extreme desert, bees could have a breeze effect and cool you down. In extreme cold, polar bears could have  a warmth effect and keep you from freezing to death, or in extreme forest, foxes could scare off or fight hostile mobs (maybe not this one) but when you are near height limit parrots could give you an effect that saves you from dying of thin air