The poem you're likely thinking of is "The Naming of Cats", which appears in Eliot's *Old Possum's Book of Practical Cats*. This poem humorously explores the many ways that cats can be named, and it's full of playful observations about feline behavior. While the poem doesn't explicitly state that Eliot loves cats, the lighthearted tone and affectionate descriptions suggest a fondness for them.
It's possible you're thinking of a different poem or mistaking the title. Do you remember any specific details about the poem you're looking for?