A pet donkey that escaped his owners five years ago in California has been found "living his best life" with a herd of wild elk.

Terrie and Dave Drewry, of Auburn, are convinced the animal, filmed by a hiker earlier in June, is their pet "Diesel".

The couple say they are relieved the animal is safe - and have decided to let him wander free with a new family as a "wild burro" .