 The Goodies' animal "patients" include a gigantic-sized snake, a gold fish, a hen (which escapes from the basket "en route" to the office), a large dog, a bushbaby, a tortoise, a mongoose, a vampire bat, two singing dogs, and a tiny fluffy white kitten called "Twinkle".Graeme's specially formulated growth mixture, which he feeds to the kitten, causes Twinkle to grow to super-size proportions.Graeme keeps Twinkle inside to stop him from wandering, but Bill decides to let Twinkle out for the night.