Abilities that play into the strengths/weaknesses of my animal characters

The general gist of my story is that it centers around these animals being tasked to fight off these hidden aliens only they can see. They are given abilities to fight them off. Im kinda stumped for the power of my main character, he is a bulldog. I had an RPG class method of thinking with him being the knight. Im stumped because I don’t know whether to settle with kinetic energy manipulation, earth/sand manipulation, elasticity or some sort of size shifting power. For my other characters, there is a chameleon who works like an archer. Turning into different kinds of projectile weapons and merging with the environment. A cat that can duplicate herself. A chicken who can generate intense heat when he is angry/damaged. I definitely like playing off aspects of the animals and enforcing certain aspects of themselves.