What record does Anoura fistulata hold for mammals?

A two-inch-long tube-lipped nectar bat hovers by a narrow, bell-shaped flower in its forest habitat. This hungry animal is after nectar at the bottom of the blossom. To get to the goody, the bat pokes its snout into the flower. With the nectar still out of reach, the mammal sticks out its tongue, which is one-and-a-half times the length of its body. After licking up the sticky sweet, the bat retracts its jumbo-size tongue and flies off.

The tube-lipped nectar bat ("Anoura fistulata"), native to cloud forests of Ecuador, has a body length of around 5.5 centimetres (2.1 inches) but a tongue length of up to 8.49 centimetres (3.3 inches) – giving it a body-to-tongue ratio of 1:1.5, or 150% its own body size. When not using its tongue, the organ is retracted and stored in the bat's thoraic cavity around its rib cage.