The Narwhal's Left Tooth: Beware: Frogs, salamanders on the move

The enigmatic narwhal

One big tooth: Let's talk about the narwhal's tusk

Bridge the Gap: Frogs, Salamanders, & More - DiscoverNEPA

The Narwhal's Left Tooth: Ancient and Exaggerated: Narwhals

Common Frog Animal Facts Rana temporaria - A-Z Animals

Lyme Land Trust

Researcher keeps tabs on Ohio's endangered amphibians

frogs Archives - Australian Geographic

New research: Why do some frogs have teeth?

Narwhal has the strangest tooth in the sea

Vernal Pool Amphibians Get Shocking Early Start In New York State

Frog Lady, Wookieepedia