Apart from probable scent-marking, the rubbing against the tunnel is at least partly a grooming need as otters need to periodically get dry to maintain their fur waterproofing. When I've watched them in Scotland on the coast they roll and rub themselves dry on seaweed or grass just before curling up for a nap. As this otter didn't re-enter the water (in shot) it might have gone ashore for a nap too.
Apart from probable scent-marking, the rubbing against the tunnel is at least partly a grooming need as otters need to periodically get dry to maintain their fur waterproofing. When I've watched them in Scotland on the coast they roll and rub themselves dry on seaweed or grass just before curling up for a nap. As this otter didn't re-enter the water (in shot) it might have gone ashore for a nap too.
WildlifeInCloseUp 1 year ago