Here are some of Dog's strange behaviors, reactions (probably allergic) and even emergency uses. (read..."SOME")
fact 1: This came from a joke I said to one friend that Dog was made from blue Lego blocks when Alex first made him. I wasn't serious with that, but it became a staple joke about him. The joke here is that he's probably "sneezing his brains out", which might explain why he has no brain in the first place...
fact 2: a quick joke. Plus I always wanted to draw him with his tongue stuck on something. Don't worry, he got out after an hour more...though he left his tongue ON the chair...he popped it off...
fact 3: he doesn't look all yellow, cuz he didn't finish it.
fact 4: I figured this comic isn't all about his disadvantages, so I added a few of his uses. This really came in handy...until he ate the bulb.
fact 5: "If Dog is so strange, why doesn't he grow to a gigantic size?" My answer: cuz you didn't feed him after midnight. (Gremlins Reference...)
fact 6: I'm a fan of Futurama's talking evil Richard Nixon head. My plans were to make Nixon as one of Alex's foes. I have to think about that...
fact 7: originally, Layla's using his tail as a rotating fan, but I butchered the art, so I fixed it into that.
fact 8: everybody's favorite: Do not feed him Coffee. He farts fire.
note: don't bother to rationalize how did Dog had these abilities. it's not healthy.