Narrador: Cuando las tres casa estaban terminadas los tres cerditos cantaban y bailaban felices por haber terminado su casa y Narrador: Cada uno se escondió en su casa pensando que estaban a salvo pero el lobo se encamino a la casita de paja del hermano pequeño y en la puerta aulló.

Lobo: (desesperado) –Soplare y soplare y tu casa derribaré.

Narrador: Sopló con todas sus fuerzas y casa derribó. El cerdito pequeño corrió lo más rápido que pudo y entró en la casa de madera…

Narrator: When the three houses were finished the three little pigs sang and danced happily at having finished their house and

Narrator: Each one hid in their house thinking they were safe but the wolf went to the little brother's straw house and howled at the door.

Wolf: (desperate) –Blow and blow and I will knock down your house.

Narrator: He blew with all his might and knocked the house down. The little pig ran as fast as he could and entered the wooden house ...

Explanation:

when the outside temperature is too cold, an endothermic animal can generate heat by shivering. endothermic animals must eat much more often than ectothermic animals since it takes energy to maintain a constant body temperature.