A possible little sibling figure for Kodi?

I've got a couple of Ah'mir pups that may fit the bill.

Aye'humu - He is one of Damien and Akoda's pups. He's also the smallest of the bunch of them which will eventually lead to him harboring feelings of inadequacy. Since Damien is not planning on having any part in raising the pups it would be realistic for Aye'humu to seek out a male role model elsewhere, though he would still continue vying for his father's attention.

Rayli'e Inona'lendri - She is part of the Rith'r Flik scattered pups plot. The plan for her is to be taken in to the Ah'mir clan by Castor. She's a spunky and fighty pup with a little bit of an attitude. Any bond with her would lead to drama and potential heartbreak when the Rith'r Flik dogs try to take her back.