Underground Dylanus

Underground dylanus is a future species of large muscular snow leopard-size mole-like mostly-quadrupedal descendants of domestic dylanus that digs underground like a mole. It is an omnivore that feeds mainly on insects, spiders, worms, lungfish, frogs, lizards, birds, eggs, small mammals, roots, and tubers. The back of its head is enlarged because of the underground life, so the back of its head is used to detect vibrations underground and on ground, so it could locate around its environment, for finding food and/or for looking for mates. When they go out of their underground homes, they are mostly vulnerable to the elements and predators, but they have sharp strong claws and teeth for defense against predators, they are also good swimmers in case if they're not underground, so they can dig even if they're underwater, as they can hold their breath for almost 3 hours due to enlarged lungs to keep most of the oxygen in for a long time. Their long noses have lots of sensitive cells in them to detect worms and other underground animals efficiently in a similar manner to moles.

Evolution
After humans became extinct and all other sapient species/beings left Earth, many of the pet dylanuses were left to die, but broke out due to intelligence, grasping hands, and human-like sizes, they went out to fend for themselves. Many domestic dylanuses in Europe were killed off by predators, but some survived by going into caverns, where they have enhanced their digging abilities. Over time, they evolved into a more mole-like muscular species that is a strong digger. They have evolved into the underground dylanus.