Which sentences are using commas, semi-colons or neither? a bird is small but it requires more food in proportion to its size than a baby or a cat. a chimpanzee can learn to recognize itself in a mirror but monkeys can’t. a chameleon can move his eyes in two directions at the same time his tongue is twice the length of his body. a father sea catfish keeps the eggs of his young in his mouth until they are ready to hatch and doesn’t eat until his young are born, which may take several weeks. a holstein cow’s spots are like a fingerprint or snowflake no two cows have exactly the same spot 7. a leech will fill itself with 3 to 4 times its own body weight in blood and will not feed again for months.