Some sweet photos and soothingly simple prose. However, I couldn't determine which guinea pig was Gertie and which was Gus. These also were not the original names of these piggies (you see the real names in the original German title on the copyright information page.) There is also some wrong info on guinea pigs given. Guinea pigs do not do handstands or somersaults, although they do leap and twist in the air suddenly in a way that guinea pig owners call "popcorning."