1. Animals with similar external features can be grouped together.
1.1 These animals have tails.
1.2 These animals have fur.
1.3 These animals have beaks.
1.4 These animals have shells.
1.5 These animals have wings.
1.6 These animals have horns.
1.7 These animals have scales.
2.1 A group of animals can be divided again into different group. For example, the animals below are group into one group because each of them has for legs and a tail.
Tigers and lions have claws and fur. Goats and cows have horns and hair. So, we can group these animals into two different groups.
2.2 Animals with claws and fur.
2.3 Animals with horns and hair.
2.4 Group the animals according to the number of legs they have
(A) Animals That Have Two Legs
(B)Animals That Have Four Legs
(C) Animals That Have Many Legs