A sprocket
A sprocket is a toothed wheel whose teeth engage the links of a chain.
It's the small toothed wheel that the chain runs over by the rear wheel, although in engineering terms it is any toothed wheel designed for a chain, including the one rotated by the pedal and crank on a bicycle.
They have teeth because they are toothed whales.
They are toothed whales.
Dentatus, "having teeth".
Saber toothed cats did not have black teeth. Many saber toothed cat fossils come from the La Brea Tar Pits, where the teeth and bones were preserved. The asphalt that preserved the bones, though, also stained them.
A red maple leaf is toothed, which means it has serrated edges resembling teeth.
Is the Pope Catholic! (Yes they do.)
24in
they have baleen.
18
canine teeth is the answer