fish, amphibians and reptiles

An online crossword puzzle with 20 words. Play it free at AgileCrosswords.com.

Clues

Reproduction of frogs and toads
Basic characteristic of the chordate phylum
Internal gas -filled sac that helps the fish stabilize its body in different depths
Class of the phylum Chordata
Basic characteristic of the Chordate phylum
Way of controling body temperature
Shad of the skin
Internal organs that filter wastes from the blood
Rich with blood vessels
Kind of fish fish
Snakes inject venom through
Kind of fish
An amphibian
Basic characteristic of the chordate phylum
Backbone
Heart chamber
Extinct reptiles
Similar to frogs
Enable to climb easily
Heart chamber