Can chase very well something that moves, very fast, has a very good sense of smell and can dig very deep.
Rikiki is a hunting dog. He was trained to kill foxes and other wild carnivores (badgers, weasels…). But he once saved a fox, named Foxy. And then this fox saved him. They were friends for a short time, but their relationship was very close. Since then, they never met again. Rick kept doing his job, and once tried to catch Laika and her mother when Laika was a pup (they are foxes).