Why Can’t You Just Toss That Turtle or Koi?

Why can’t you just toss a pet turtle out into cold water or bring them into warm water during the off-season?

Like, if you have turtles that are used to it in the house it’s 69 to 79° and you want to put them out in the spring and it’s 48°, why would that hurt them?

Or, if it’s in the middle of the summer, and for some reason they go down to 55° because of a water line break, why does that kill them?


Cold blooded animals are able to survive in these temperatures because they have what are called iso enzymes. They have enzymes that allow their metabolism to perform in the heat of the summer, but it is yet another set of enzymes that allows them to perform in practically ice water in the winter time. Something we cannot do.

Read the whole thing: (3.5min read)