Mr Peebles may look like a kitten, but he is actually 2-year-old. The tiny cat got its size from a genetic defect that stunts growth. At just 6.1-inch long, he currently holds certification from The Guinness Book of World Records as the world’s smallest cat.
The marmosets /ˈmɑrmɵsɛt/ are 22 New World monkey species of the genera Callithrix, Cebuella, Callibella, and Mico. All four genera are part of the biological family Callitrichidae. The term marmoset is also used in reference to the Goeldi's marmoset, Callimico goeldii, which is closely related.