I think it would be cool to be able to meow and howl and roar and bird call. It could be to other people who weren't rangers it could be like "A wolf howls in the distance" and to rangers such as our friends WolfClan it could be like "CatClan howls,"Hahahahaha non-rangers don't understand me"!
the command could be "wolfhowl" or "wolf" or "wolf howl" or "aroo" and you could go "aroo Hey rangers you guys can here us!"