Six Legless Lizards | 台北市立動物園資訊網

2021年3月22日—ThemostcommonleglesslizardinEuropeistheAnguisfragilis,or,assomelanguage-challengedBritscallit,theslowworm.Theyalso ...

What is the difference between a legless lizard and a snake? Although at first glance they may look like a snake, legless lizards have anatomically distinct features that set them apart. The most common, and probably most notable, of these are eyelids and externally opened ears. Snakes don’t have them. Broad belly scales are a snake characteristic that most legless lizards lack. There are of course more definitive internal differences, the lizards generally have more pronounced evidence of vestigial limbs, roughly equal-sized lungs, and relatively short bodies in relation to their tails.

In reality, the term “legless lizard” isn’t that useful zoologically. There are seven families of lizards that include at least some legless species. It is a parallel evolutionary adaptation that doesn’t imply zoological kinship. For example, one of the larger subgroups, pygopodids (44 species), are classified in the same clade as geckos.