Funny Pun Prone To Agree Happy Birthday Card

So, if you are looking at the backside of a person from Helsinki, would that be a dorsal Finn? If a veterinarian is looking at a side view MRI of a sad puppy's caudal appendage, would that be the saggy-tail plane? If we were at an insect-infested picnic and I kept making bad body structure puns, would you throw an ant to me? I'll stop before you start to ventral off some steam. Please enjoy this funny pun happy birthday card!