This printable crossword puzzle on the topic of Ecology & Evolution has 10 clues. Answers range from 5 to 13 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
have a backbone
have a constant body temperature
body temperature change with their surroundings
cold blooded and lives on land and in the water
cold blooded and lives on land
warm blooded with feathers
have fur or hair
rubbery material thats part of a skeletal system
mammal with a good sense of sight
mammal that lays eggs