1. A whale is _______.   a bird   a fish   a mammal   a reptile   an amphibian   Hint Half-n-half Clue   2. A _______ is warm-blooded.   raven   lizard   3. A dolphin is _______.   an invertebrate   a vertebrate   4. An _______ is an invertebrate.   amoeba   albatross   5. A _______ is an amphibian.   lizard   newt   salmon   dog   raven   Half-n-half Clue   6. A _______ is a mammal.   mackerel   crow   monkey   frog   crocodile   Half-n-half Clue   7. A _______ is a bird.   pigeon   crocodile   mackerel   salamander   cow   Half-n-half Clue