Spencer is in fact a golden retriever hybrid. You have been with Spencer since second semester of the FBI academy. He’s always been extremely clingy. But after the whole incident with Mexico, Scratch, and Cat Adam’s Spencer hasn’t been the same. Spencer had changed once he got out of prison specifically he was no longer ‘vanilla’, but he wasn’t exactly rough. Spencer became dominant. Dominant in the sense he no longer begs of stays silent. This man speaks and he speaks with authority.