Animals by level and gut

A list gives ten animals with their level of organisation and their kind of gut. You will count the animals at each level, list those at the organ system level, and find the share with a complete gut. Then the program draws the counts.

The idea. Each animal has one level: cellular, tissue, organ or organ system. Its gut is none, incomplete or complete.

Your tasks.

1. Set counts to a dictionary of each level and the number of animals at it.
2. Set systems to the names at the organ system level, in the order of the list.
3. Set share_complete to the per cent of animals with a complete gut.