Warm blooded

We were all playing and Jax says I'm warm blooded. The husband and I looked at each other and said yes you are. Apparently they are learning about warm blooded animals at school. After his bath he was telling us that a beaver was warm blooded. I am just very impressed that they are teaching this to 3 year old. I used one of those height calculators to see how tall Jax was going to be when he is 18 and it said he would be around 6'2. Not much else going on here just excited that tomorrow is Friday!