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Animal Classification

Suggestion: Use your Versions of Vertebrates chart, binder resources, and/or Quizlet flash cards on eClass if you need help!
Across
An animal without a backbone
A vertebrate that is covered in scales and breathes through gills
A warm-blooded vertebrate that gives birth to live young
Another word for babies
A vertebrate with moist, smooth skin that lays eggs underwater
Many invertebrates have a protective outer shell called a(n) _________.
Mammals, birds, and reptiles all breathe with ________.
Down
A cold-blooded vertebrate that breathes with lungs and is covered in dry scales
A warm-blooded vertebrate that lays eggs
To sort into groups based on observable traits
Whether an animal is cold-blooded or warm-blooded depends on whether it is able to control its own body __________.
Bonus: Scientists use a _________ key to classify animals into two groups at a time
An animal with a backbone
Mammals are the only vertebrates to make ______ for their young
Fish and some amphibians breathe through these