What Is a Group of Iguanas Called?

Mess is the standard, and really the only well-documented, term for a group of iguanas. It fits the loose, sprawled-out way iguanas gather — several animals basking, feeding, or crossing paths in the same spot without much coordinated behavior, more a scattered pile than an organized unit. Other collective nouns occasionally show up in general animal-name round-ups, but none are specifically and consistently documented for iguanas the way mess is.

Where Did the Name Come From?

Many of English’s classic collective nouns, like a murder of crows or a parliament of owls, trace back to the Book of Saint Albans (1486), a medieval English list of hunting and gathering terms. Iguanas, however, are New World reptiles, native to Central and South America, the Caribbean, and the Galápagos Islands, and were unknown in Britain at the time that tradition was compiled. So, like sharks or crocodiles, mess almost certainly does not descend from that 15th-century hunting-list tradition. It’s a more modern, descriptive coinage — “mess” in the older sense of a group sharing a space (as in a military mess hall), applied to the untidy way iguanas pile up together.

Iguana Facts

• Diet: Most iguana species are primarily herbivorous, grazing on leaves, flowers, and fruit; juveniles of some species opportunistically eat insects for extra protein while growing.
• Habitat: Green iguanas are largely arboreal, spending much of their time in trees near water, while desert iguanas are ground-dwelling and marine iguanas, found only in the Galápagos, forage directly in the ocean.
• Thermoregulation: As ectotherms, iguanas rely on basking in the sun to regulate their body temperature, which is why groups so often cluster on the same sun-warmed rocks or branches.
• Size range: Species vary enormously, from green iguanas that can reach five to six feet including the tail, down to desert iguanas that top out around a foot and a half.
• Lifespan: Iguanas typically live 10-20 years in the wild, with some species living considerably longer in captivity.

Example Sentences

• A mess of iguanas sprawled across the seawall, soaking up the morning sun.
• Divers spotted a mess of marine iguanas grazing on algae just offshore.

Other Names for a Group of Iguanas

Unlike many collective nouns that come with a handful of documented alternates, iguanas really only have one: mess. It’s worth saying plainly rather than padding the list — general animal-name compilations sometimes throw in other terms, but none are consistently or specifically documented for iguanas, so mess stands as the term to know.

Frequently Asked Questions

What is a group of iguanas called?

A group of iguanas is called a mess.

Is mess the only term for a group of iguanas?

Yes, it’s the primary and really the only well-documented collective noun for iguanas; other lists sometimes suggest alternates, but none are consistently documented specifically for iguanas.

Does the term mess trace back to the Book of Saint Albans?

Almost certainly not. Iguanas are New World reptiles, not native to Britain, so the term likely wasn’t part of that 1486 medieval English hunting-list tradition.

Are all iguanas herbivores?

Most iguana species are primarily herbivorous, though juveniles of some species opportunistically eat insects for extra protein.

What is unique about marine iguanas?

They are the only lizard species that forages in the ocean, diving to graze on algae, and they’re found only in the Galápagos Islands.