So, been away a while, didn't realise pets could be neuter, adopted a neuter pet. While I'll still train him, is there anyway to undo this and what uses does he have special due to being neuter? (He's previously bred - I say he, he could be a she but he's got no mark~).

It is forever. Just like when you nueter to a real pet dog.

It does not give any advantage to the pet.

Your lykos is a male. It's child shows that the father is the one you have now.

Awesome, thank you!

Thought it might have a reverse as the neuter item is a serum rather than a surgery~