They are most certainly NOT dogs, but xBNx hadn't quite come up with a name for them yet. Regardless, this was a super unique creature creation commission I got to do for him, and I had a ridiculous amount of fun with it.
For those curious: these creatures suck in air through the holes in their backs and store it in the green pouches, then fire it at high pressure from their second mouths to stun prey. Neat!