What animals that estivate?

Estivation is a state of inactivity and lowered metabolic rate that some animals enter during periods of heat and dryness. It's similar to hibernation, but instead of being triggered by cold temperatures, it's triggered by hot and dry conditions.

Here are some examples of animals that estivate:

Invertebrates:

* Snails: Many species of snails estivate during the summer months, sealing themselves inside their shells to conserve moisture.

* Earthworms: Earthworms burrow deep into the soil to avoid the heat and dryness.

* Certain insects: Some insects, like cicadas, enter a dormant state during the hottest months.

Vertebrates:

* Amphibians: Many species of frogs and salamanders estivate during the summer, burying themselves in mud or under logs.

* Reptiles: Some reptiles, like turtles and lizards, will enter a state of inactivity during the hottest parts of the summer.

* Fish: Certain fish species, like lungfish, can estivate in mud during droughts.

Other animals:

* Some mammals: Certain species of mammals, like the African fat-tailed gerbil, enter a state of estivation to conserve energy and water.

* Certain birds: While less common, some birds may enter a state of torpor during periods of extreme heat.

It's important to note that not all members of these groups estivate. The specific species that estivate depends on their individual adaptations and the environmental conditions they experience.