This is a slightly strange book. It's history, disguised as the diary of a slave-cat in Ancient Rome, and full of groanworthy puns. As I read it, I found myself unsure, at times, whether it was really very clever, or just irritatingly silly. It somehow managed to be both. The blurb on the back describes it as a 'witty Roman romp', which is exactly what it is. It's Ancient Rome - approximately - in a universe where cats rather than humans are in charge. Indeed, humans don't seem to exist at all, although other animals and some birds feature in the book. There's plenty of romping, and it's certainly witty.
For more light-hearted history, you might like [[The Comic Strip History of the World by Sally Kindberg and Tracey Turner]].