Wu Dong Qian Kun - MC has a Fire Python Tiger as a pet that grew up with him. Stellar Transformation - MC has a Mixed Hairy Bird. It has been a pet since he was little, and when they grow up they call each otherr sworn brothers.
Coiling Dragon is the only novel where one of the MC pets is relevant enough to be considered as half-MC. The others receive a pretty good attention too. edit: someone above posted Stellar Transformation, i forgot that one. Pet there is relevant too. Most cultivation novels the pets became obsolete after a time, when not made as bidimensional characters. There’s some novela focused on pets, like “The Charm of Soul Pets”. They’re neither good or bad, and the pets get an extremly relevant attention without the need of humanizing them.