How are dogs and wolves alike?

Answer 1

Dogs are direct descendants of wolves; dogs have been selectively breed in different ways to develop the various breeds of dogs, but genetically they are all the same species.
(yes, your chihuahua really is a wolf)

Answer 2

They are both alike cause they are both in the dog family
In technical terms, they are the same species as wolves, because most breeds descended from wolves. Dogs are a different subspecies to wolves. So in other words, they are incredibly similar in a genetic sense, so much so that they could breed and have healthy pups. Also, they look very similar, they are both mammals, their offspring are called pups, the females are called b*tches (I had to sensor it so the answer wouldn't get flagged), the males are called dogs. The few differences I can think of are that wolves are wild, and therefore live in different habitats, and dogs tend to bark whereas wolves don't.