1) Has it got a skeleton?

1) Has it got a skeleton?

1. No

   • It´s an invertebrate

2. Yes

   • It´s a vertebrate

3. 2) Are the babies born alive?

   • 3) Has it got feathers, a beak and wings?
     • yes
       • It´a bird
     • no
       • Go to 4
     • 4) Does it lay eggs in water?
       • no
         • It´s a reptile
       • yes
         • Go to 5
       • 5) Has it got fins?
         • no
           • It´s an amphibian
         • yes
           • It´s a fish
   • yes
     • It´s a mammal
   • no
     • Go to 3