Well, that’s not likely possible because there isn’t enough brain volume for the

Well, that’s not likely possible because there isn’t enough brain volume for the sufficient neural numbers. Dogs are already just neotenous wolves.
Bird brain structure is superior per unit of volume for reasons we understand, but again, even with that organization the brain is too small.
Brain to body volume ratio, and availability of hands constrain most animals.

Crows are freaking scary but they’re also freaking petty. ;). Dogs are almost neurologically perfect for cooperation with man.