Surprisingly, animals that work hard to build houses

crocodile

Build mud => Lay eggs =>

Make a hut by putting plants on top of it.

And when the plant rots, it releases heat during the decay process.

Acts as a natural incubator and eggs hatch

They even check the temperature by periodically touching it with the spout.

If it’s too hot, they remove the plants, and if it’s cold, they add more.