I laughed at this
Jemima's art teacher told the class an apparently true story about her sister in law's friend (or someone) who owned a python as a pet. She allowed it out of its cage to roam freely around the house for short or long periods.
She began to notice after a while that it had not been eating much, and she was a little worried about it. Then one day, with it out of its cage, she took a nap and woke up to find the python stretched out to its full length next to her in the bed.
Quite concerned, she took it to the vet only to be told that the python had not eaten because it was saving itself up for a big meal. And the reason it was lying next to her was because it was measuring her to see if she was the right size to be the next big meal.
The python is no longer a pet!