VÍDEOS DE ANIMALS VERTEBRATS

https://www.youtube.com/watch?v=_LvZzt6WnC4

https://www.youtube.com/watch?v=P-92RX0XqCc

https://www.youtube.com/watch?v=j4V2dema2yI

https://www.youtube.com/watch?v=eZXJ-g4jBG4

https://www.youtube.com/watch?v=wX5gL-sgr80

https://www.youtube.com/watch?v=amQj26jhgwU