Dinosaurs, they roamed the Earth back in the Jurassic.



But why did they all vanish? The question is a classic.



Well, scientists have finally learned the cause of their demise,



and frankly, it should come as no surprise







They didnt look both ways when they crossed the street.



They didnt wash their hands when it was time to eat.



They sat too close when they watched TV,



and thats why theyre not here, you see?







The dodo bird existed since the prehistoric ages.



But you wont find the dodo in your local zoos cages.



They became extinct, yes, but why did that occur?



Now, at last, we know for sure







They didnt pick their toys up from off of the floor.



When they came in the house, they didnt close the door.



They didnt brush their teeth at night,



and thats why theyre not here. Thats right!







People say that there was once a horse who had a horn.



But others say there never even was a unicorn.



Now we know that yes, there was, but they are gone away,



and this is what their mothers had to say







They never said, thank you, never said, please.



They wouldnt eat broccoli, spinach or peas.



They didnt do their homework, too,



and thats why theyre not here. Its true!







The dinosaur, the dodo bird and the unicorn are gone.



But you can guarantee that your own species will live on.



Dont do what they did, and do the things they should have done,



and you will find your life a lengthy one







You gotta look both ways when you cross the street,



and wash your