Sludge is the wolf with the smoke coming out of his mouth and ears and Eclair is the gross looking Tasmanian Tiger.
They're mates but currently have no real background story other then Eclair dieing and being brought back but unknown means. Thats why he has the stitching.
Sludge has a condition that creates smoke from his lungs which is killing him from the inside. So his fur is stained and his teeth are rotting and he's just plain gross D:
I'll write more and have character sheets soon right now i'm kinda lazy D: