Molarless Rat
A newly discovered rat, announced Aug. 21 in the journal Biology Letters, lacks back teeth.
New Rat
The rat lives in the Philippines and is the only known rodent species without molars.
New Rat Skull
This view of the rat's skull reveals its lack of teeth.
Rat Teeth
In addition, the rat has double-pointed bicuspid incisors, which it may use to tear its earthworm prey.