This is Neocanis Silvestris, the speculative evolution of the Chihuahua, 20 milion years from now.
I had fun imagining how Chihuahuas could evolve in 20 milion years.
Without humans, they would seek shelter in forests and woodlands and become nocturnal tree dwellers. Perfectly adapted to this new environment, they would develop a better eyesight and earing, agile appendages and a prehensile tail. They would also become omnivorous.