"toughest" is an adjective ( the superlative form of "tough" )
The Toughest was created in 1978.
A salamander is a amphibian.
it is a Amphibian... A frog is an amphibian, not a reptile.
the toughest glue is super glue
Ontario is the toughest exam in canada
Philly is by far the toughest.
The state amphibian of Louisiana is the green tree frog. The amphibian was chosen as the state amphibian in 1993.
amphibian
amphibian
Amphibian.
A frog is an amphibian.