Brown bears take 'synchronized nap' in Alaska

The 17-year-old sibling male and female brown bear siblings, "JB" and "Patron" have stayed at the Alaska Wildlife Conservation Center since 2004, according to its website.

The bears can often be spotted digging holes, catching fish and roughhousing, it adds.

The video was filmed by a manager at the centre, a non-profit wildlife sanctuary that takes in orphaned and injured animals over a 200-acre (81-hectare) area in Portage, Alaska.