👉 In biology, a "rutaceous" organism is one that lacks any of the characteristics commonly associated with a mammal or reptile. These animals are characterized by having small bones and scales, which they use for protection and mobility rather than for eating or moving. They also lack the ability to breathe through their skin, which allows them to live in environments with low oxygen levels or without oxygen at all. For example, a "rutaceous" animal might be a reptile such as a snake or
