Soulmutt 

A pet that feels like a kin to your spirit.

My Chihuaua Yoda is my soulmutt.

Soulmutt by Regztemk October 31, 2017

A Soulmutt 

This is someone with a relationship that is less than a soulmate but more than a friend with benefits.

Susie is my friend and a soulmutt.

A Soulmutt by I, Wreckerrr January 1, 2021