Kit anal protusion

We have a two week old kit. All four have been thriving. Tonight at weigh in and petting time we saw the largest, a male, has some kind of slightly bloody (fleshy?) protusion from the anus. What on earth could be going on? His behavior is normal. A vet is in our future but I wanted to see if anyone had any experience.

His daddy just got neutered and that didn't go as well as our previous neuter did. (He's okay it was just a rougher procedure.. The other vet used dissolvable sutures...

Kit anal protusion