1. A mosquito is _______.   an invertebrate   a vertebrate   2. A _______ is a vertebrate.   jellyfish   herring   3. A _______ is a fish.   lizard   sardine   dove   horse   frog   Hint Half-n-half Clue   4. A whale is _______.   a fish   a mammal   a reptile   an amphibian   a bird   Half-n-half Clue   5. A _______ is a vertebrate.   snake   starfish   6. A _______ is warm-blooded.   lizard   raven   7. A _______ is a mammal.   crocodile   frog   monkey   crow   mackerel   Half-n-half Clue