1. A whale is _______.   a bird   an amphibian   a fish   a mammal   a reptile   Hint Half-n-half Clue   2. A _______ is cold-blooded.   polar bear   snake   3. A _______ is a mammal.   monkey   frog   crow   mackerel   crocodile   Half-n-half Clue   4. A dolphin is _______.   an invertebrate   a vertebrate   5. A _______ is an amphibian.   dog   newt   raven   lizard   salmon   Half-n-half Clue   6. A _______ is a fish.   frog   horse   sardine   dove   lizard   Half-n-half Clue   7. A toad is _______.   a mammal   an amphibian   a bird   a fish   a reptile   Half-n-half Clue