Subscribe | UPI Odd Newsletter Subscribe SAN DIEGO, Dec. 15 (UPI) -- The San Diego Zoo Safari Park has released video of cheetah cub Ruuxa showing off his speed while playing with his puppy companion. The 7-month-old playful pair were filmed playing in an open area set aside to allow Ruuxa to reach his top running speed. Advertisement Raina, a female Rhodesian ridgeback, was introduced to Ruuxa after the cheetah was rejected by his mother. The pair became constant companions and Raina was credited with helping Ruuxa recover from surgery to correct a problem with his front legs in September. The cheetah recovered fully from the procedure.