1. A _______ is a fish.   lizard   frog   horse   sardine   dove   Hint Half-n-half Clue   2. A spider is _______.   an invertebrate   a vertebrate   3. An _______ is an invertebrate.   albatross   amoeba   4. _______ is a reptile.   An alligator   A fox   A sardine   An albatross   A frog   Half-n-half Clue   5. A _______ is a vertebrate.   herring   jellyfish   6. A toad is _______.   a bird   an amphibian   a mammal   a fish   a reptile   Half-n-half Clue   7. A _______ is warm-blooded.   lizard   raven