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At this point, anyway.
What's the point of having a new generic sheep or dog when the concept was already done better before?
This series should have WAY more branching evolutions than it does now. The coolest part about evolution is seeing how the Pokémon's traits are expanded upon and even evolve into incorporating something else into it. The lamest part of Pokémon is having shit like Yamper (Electrike), Wooloo (Mareep) and Eldegoss (Whimsicott) for some examples just being what was done before but more generic and bland.
This goes for regional variants as well, as they are also a form of evolution. Before it was at least fine, since most similar mons were pretty distinct and had a purpose. Growlithe is a fire dog with tiger features based on the Shiisaa, Snubbull is a bipedal pink bulldog, Smeargle is some really funky more human-like painter beagle, Houndour is a rough dark/fire dog with bone/hell motifs, Poochyena is a dark hyena/canine hybrid, Electrike is some really fucking weird electric dog with an unrecognisable body, etc.
Hell even the Lillipup line is pretty unique, and I think it's fine due to all the real life variations dogs have. But what is the purpose of Yamper, for example? It isn't unique. It brings nothing new to the table. If you wanted an electric dog THAT badly you could've just used the multitude of existing dogmons for a new regional variant. Something that expands the world in a meaningful way, instead of just a new filler dog that...already exists amongst many other dogmons, meaning it isn't "the" dog of its region. Hell, Boltund's concept could've just been used for a Lillipup branched evolution.