Arcanine Snarl/Crunch

Arcanine build to be an attacker not a defender...

Forget the defender part & have some fun attacking Exeggutor w/ it! Nice catch btw!

There is one move that counters Vaporeon, which is generally desirable on defense.

Looks like you got a scrambled egg maker (Exeggutor killer -uhhaha). Arcanine in a gym is like a nun in a - nevermind.

not at all good.

Really cool mon! It'll be a decent attacker into Espeon, Alakazam and Exeggutor until you get a Tyranitar/Houndoom/Umbreon.

I don't think I'd go for Arcanine as a defender as the CP is too low for getting a good spot in a gym. Also, Arcanine is easily countered by Vaporeon, Rhydon and a bunch of other common attackers, even with that moveset :)