Man, that was just the best party ever that you had yesterday. My feet are still killing me from all that dancing. A macaque monkey appears to be laughing as it tickles its own feet in Ubud, Bali, Indonesia. - photo by Natalia Paklina
The pygmy marmoset is one of the world's smallest primates, and is the smallest true monkey, with a head-body length ranging from 117 to 152 millimetres to in) and a tail of 172 to 229 millimetres to in).