A. horridus
# A. horridus

A. horridus may refer to:

* Abdopus horridus, an octopus species in the genus Abdopus
* Acanthopholis horridus, an ankylosaurid dinosaur species that lived during the Early Cretaceous Period around 100 million years ago
* Acanthosicyos horridus, an unusual melon species found only in Namibia
* Argosarchus horridus, the New Zealand giant stick insect, a stick insect species endemic to New Zealand
