You are a giant dog. You have bonuses to STR and DEX and CHA, and penalties to WIS. You have two attacks per round: a piercing Bite that adds a Tear Throat DoT effect on a critical hit. You can also Leap Bash, a blunt attack which allows you to perform an extra move, placing you on top of an enemy in the second rank, knocking them over and resulting in a Stun on a critical.
You cannot cast spells, but have several abilities which mimic such powers.
You can track like a Ranger, unless the target is a squirrel. Then they're everywhere!
You can Lick Wounds, a HoT which remains active as long as the licking continues.
You can Growl, causing all living creatures to save against Fear, and all undead creatures to converge on the hounds location.
You can counter any Freeze or Cold spell effect with Hot Dog Breath, usable once after every meal.
You can Shed any "sticky" effect, like being covered in Slime, Acid, Burning Oil, or Goo.
You can't speak Common, or any other language for that matter, but you can understand anyone who talks to you slowly while maintaining eye contact. You can only bark in return, but everyone knows what you want - food!