Red-footed Tortoise (Chelonoidis carbonarius)

The Red-footed Tortoise (Chelonoidis carbonarius) is a tortoise found in forest edges, clearings and savannas of northern South America, listed Endangered on the IUCN Red List.

Common name: Red-footed Tortoise
Scientific name: Chelonoidis carbonarius
Conservation status (IUCN Red List): Endangered
Habitat: Forest edges, clearings & savannas of northern South America
Edition: TT-29: Learns by Watching

Named for the red scales on its dark legs, and famous in science for one experiment: tortoises that watched another walk around a fence to reach food learned to do it too. The ones that never watched never solved it. It eats fallen fruit, and the seeds come out the other end ready to grow.

Fast facts

What it eats: Eats both: Fruit, mostly, plus flowers, mushrooms and sometimes a dead animal it finds. Like a fruit salad with something extra at the bottom.
Where it lives: Rainforest edges and grassy clearings. Like the sunny spot where the woods meet a field.
Find it on the map: Northern South America. From Panama and Colombia down through Brazil.

Bright red and orange scales cover its legs and head. Like wearing red socks and a red hat.
The seeds in the fruit it eats come out the other end and grow, so it plants trees as it walks. Like Johnny Appleseed, but a tortoise.
Red-foots gather in groups under fruit trees and even follow each other to food. Like kids crowding under the one tree that drops apples.
Males make a clucking sound to each other. Like a chicken hidden in a tortoise.

It is Turtle Tuesday edition TT-29, “Learns by Watching”, drawn by hand and free to download.

Red on the legs, red on the head, a dark shell with glowing patches, which is what carbonarius means: coal-like. It lives on the edges of South American forests from Panama to Brazil, spending its days at fruit falls, eating what dropped and leaving the seeds where they can grow. It’s not a social animal. Nobody expected it to learn from another tortoise. Then eight of them were given a fence to walk around to reach food. The four that tried it alone never made it, not once. The four that first watched a trained tortoise do it all found the way. A creature that mostly keeps to itself learned the way we do, by watching someone else go first. It’s Endangered, collected for food and the pet trade, still walking around fences in the forest, one long detour at a time.

The red-footed tortoise (Chelonoidis carbonarius) is a medium-sized South American tortoise with dark limbs dotted with scales from pale yellow to vivid red. Carbonarius means coal-like. It’s considered non-social, which made a 2010 experiment surprising: four tortoises alone never solved a detour around a V-shaped fence, while four that first watched a trained tortoise all succeeded, the first evidence of social learning in a non-social reptile. In December 2025 the Turtle Survival Alliance reported it listed as Endangered (in press) on the IUCN Red List.

The Tortoise That Watched

The red-footed tortoise (Chelonoidis carbonarius) averages about 30 cm (12 in) as an adult and can pass 40. Its shell and limbs are dark, dotted with scales from pale yellow to deep red. Carbonarius means coal-like: a dark coal with glowing patches.

It lives across a wide slice of South America, from southeastern Panama through the Guianas, south along the Andes through Colombia, Peru and Bolivia, and east into Brazil, preferring the edge between forest and savanna. The seeds it swallows from fruit come out in its droppings, so the tortoise plants as it eats.

Biologists count it as non-social, which made a 2010 experiment at the University of Lincoln striking. Eight tortoises faced a transparent V-shaped fence with food on the far side, a detour requiring them to walk away before turning toward it. Four tried it alone and never made it around. The other four first watched a trained tortoise solve it, and all four found the way, the first evidence a non-social reptile can learn by watching another.

The species is on CITES Appendix II; between 2000 and 2005 some 35,565 were exported, mostly as pets and food. In December 2025 the Turtle Survival Alliance reported it listed as Endangered (in press) on the IUCN Red List, citing habitat destruction, overcollection and subsistence hunting. That same month, twenty were released into a nature reserve in Sucre, Colombia.

Key Moments

Panama to Brazil: The red-footed tortoise settles the edges of South America’s forests, from southeastern Panama south through the Andes and east into Brazil
2000 to 2005: Some 35,565 red-footed tortoises are exported, mostly as pets and food
2010: Wilkinson and colleagues publish the fence experiment: tortoises that watched a demonstrator learned the detour, tortoises that tried alone never did
December 2025: The Turtle Survival Alliance reports it listed as Endangered (in press) on the IUCN Red List; twenty are released into La Carranchina Nature Reserve in Colombia

Fun Facts

It learns by watching. In one study, tortoises that watched a friend walk around a fence learned the way. Tortoises that watched nothing never did.
Red feet. Its dark legs are dotted with bright scales, from pale yellow to deep red.
Like a coal. Its scientific name means coal-like. Picture a dark shell with glowing red patches, like a coal in the fire.
It plants as it eats. Fruit is most of its diet, and the seeds come out in its droppings and grow.
A long wait. A mother lays two to seven eggs, and they can take more than six months to hatch.
The edge of the woods. It likes the in-between places where forest meets grassland, like clearings and creek banks.

Conservation Notes

The Turtle Survival Alliance reported in December 2025 that the red-footed tortoise is listed as Endangered (in press) on the IUCN Red List, threatened by habitat destruction, overcollection and subsistence hunting.
It’s on CITES Appendix II. Between 2000 and 2005 some 35,565 were exported, mostly as pets and food. In December 2025 twenty were reintroduced into La Carranchina Nature Reserve in Sucre, Colombia.
In 2025, red-footed tortoises were released into Colombia’s La Carranchina reserve, which had grown by 100 hectares the year before, the Turtle Survival Alliance reports.

Mini FAQ

What did the fence experiment show?

Eight tortoises faced a transparent V-shaped fence with food behind it, a detour meaning they had to walk away from the food before turning toward it. Four tried it alone and never got around the fence. The other four first watched a trained tortoise solve it, and all four found the way, the first evidence a non-social reptile can learn by watching another.

Is it really endangered?

In December 2025 the Turtle Survival Alliance reported it listed as Endangered (in press) on the IUCN Red List, with habitat destruction, overcollection and subsistence hunting as the main threats. It’s long been on CITES Appendix II; 35,565 were exported between 2000 and 2005.

Why are the legs red?

The bright scales on its dark limbs range from pale yellow to vivid or dark red, the reason for the common name. The scientific name looks at the whole animal: carbonarius means coal-like, a dark body with glowing patches.

Art by Lee Eisenbarth, CC BY 4.0: how to use this art.

Sources: IUCN Red List, Wikipedia.