I can’t bear it any longer!

A playful polar bear cub has been caught causing mischief in a series of sweet snaps - while its long-suffering mother bear appears to be at her wits' end.

With expressions reminiscent of a human mother who is being bothered by her baby, the polar bear covers her ears as she struggles to keep up with her energetic cub.

The adorable six-week-old is pictured following her mum out of their cave and through the deep snow as it desperately tries to get her attention. (Daily Mail)