This printable word search puzzle contains 22 hidden words in a 24x24 letter grid. Words go horizontally, vertically, backwards, and diagonally. This word search is also available to download as a Microsoft Word document or a PDF.
developmental change
complex change
invertebrate
vertebrate
amphibian
feathers
reptiles
backbone
insects
infant
mammal
adult
larva
water
lungs
gills
birds
pups
land
fish
egg
fur