A pet otter works himself into a tizzy - spinning himself right round while hanging by his teeth.Three-year-old ‘Nut’ was playing on top of his cage at home in Bangkok, Thailand, when he began playing with the string.The unusual pet found a way to make himself go round while he lifted his feet in the air with excitement.Otter lover owner Nutchaneyakon, 49, said: ‘’He always has so much energy. Every day he’s finding new things to do.''