1. A _______ is a vertebrate.   snake   starfish   2. An _______ is an invertebrate.   albatross   amoeba   3. A _______ is a fish.   dove   lizard   horse   sardine   frog   Hint Half-n-half Clue   4. A _______ is cold-blooded.   polar bear   snake   5. _______ is a reptile.   A sardine   An albatross   An alligator   A fox   A frog   Half-n-half Clue   6. A dolphin is _______.   a vertebrate   an invertebrate   7. A toad is _______.   a bird   a fish   a reptile   an amphibian   a mammal   Half-n-half Clue