We have brought two little female kittens into our household, partly to keep Nero company and partly because Nero's a bit boring...
Their names are Elsa and Tess. So far, we've worked out that Tess is extremely greedy (despite being by far the smaller), whereas big sister Elsa likes her food but doesn't nag for it. Elsa is also much more confident around us; Tess is quite skittish.