| A | B |
| mammary glands | produce milk for young |
| Down feathers | insulating, soft, fluffy |
| Hollow bones make birds | lightweight |
| Birds eat alot of food to | get a lot of energy for flight! |
| To fly long and constantly birds | need strong flight muscles. |
| Contour feathers make birds | streamlined. |
| Mammals reproduce | sexually. |
| Monotremes are weird mammals , they | lay eggs! |
| A duckbilled platypus is a | monotreme. |
| Marsupials have a pouch for | their babies. |
| Kangaroos and koalas are | marsupials |
| Embryos that develop in a uterus are | placental mammals. |
| Gestation period is the | amount of time the embryo needs to develop |
| Manatees belong to | Sirenia order. |
| Whales and dolphins belong to the order | Cetaceans |
| Of course and elephant is a | Trunk Nosed |
| Giraffes and deer are | Hoofed! |
| Dogs like Snoopy are | Carnivores. |
| You and I and monkeys are | Primates. |
| Bats belong to the order | Flying! |
| Rabbits, like ours, are | Lagomorphs! |
| Animals that are continuously growing teeth | Rodents. |
| Cute little hedgehogs are | Insectivores! |
| Armadillos and Anteaters are | Toothless! |