What is the theme in Old Possum's Book of Practical Cats by T. S. Eliot?

Responsibility is a theme found in three of the poems in Old Possum's Guide to Practical Cats. The first, The Old Gumbie Cat, is an example of a cat who is very responsible, even though it may not appear so at first glance. Jennyanydots, the cat in this poem, spends most of her days sleeping. However, at night, she is very resourceful and spends her time taking care of the forgotten creatures.