Terrific facts about the different types of tortoises
BY: Tasneem Johnson-Dollie
There are tons of different types of tortoises on Earth and even more tortoise facts that you can learn to get up to speed on every species!
From how they smell to where they live, tortoises aren’t as plain and simple as you may think.
Here are some facts about tortoises that’ll get you clued up on one of Earth’s oldest animals.
What is a tortoise?
Tortoises are land-dwelling reptiles that belong to the family Testudinidae.
They’re most easily identified by the shells wrapped around their bodies and the scaly skin they sport that’s seen on all reptiles.
The different types of tortoises vary in size and colour and some of the most obvious differences can be seen in their shells – called carapaces. The smallest tortoise carapaces measure in at lengths of less than 12 centimetres while the largest can be over one metre long.
And, different types of tortoises have shells that look quite different too. Each tortoise shell is made up of segments called scutes, and these are pieced together to form shell patterns. Some tortoise species – like the speckled Cape tortoise – have subtly patterned shells coloured with smudges of brown, grey and yellow. Others – like the Indian star tortoise – boast shells with geometric patterns that really stand out.
Most tortoises are herbivores with diets consisting of grasses, sedges, flowers, succulents and fruits. But one species, known as the red-footed tortoise, also occasionally feeds on carrion – the decaying flesh of dead animals.
How many tortoise species are there?
There are over 40 different tortoise species found in nature.
Here are some interesting tortoise facts about the different tortoise species:
- Galapagos tortoises are the largest living species of tortoise.
- The ploughshare tortoise is one of the rarest tortoise species on Earth.
- The speediest tortoises around are leopard tortoises, and these guys can even climb!
Original image: “Leopard Tortoises (Stigmochelys pardalis) pair with smaller male following the female…” by berniedup is licensed under CC BY-SA 2.0
And where exactly can you go to see all these different types of tortoises and more? Well, here’s a look at where tortoises live.
Where do tortoises live?
You’ll find tortoise species on every continent except for Australia and Antarctica.
The largest tortoise population lives in the southernmost region of Africa. In fact, the Cape region of South Africa is home to the richest biodiversity of tortoises in the world.
The leopard tortoise is the most widespread species throughout the country, while the serrated tortoise is more common in the Kalahari, and the savannah hinged tortoise is the most commonly found tortoise species in the northern regions of South Africa.
You could visit any number of habitats across the world and come across a tortoise, but most tortoises prefer semiarid environments. Deserts, grasslands, mountainous regions, scrub forests and sand dunes are some of the most well-known tortoise habitats.
What’s the difference between turtles and tortoises?
Turtles and tortoises come from the same evolutionary line, which is not surprising since these creatures have many similarities.
For instance, both turtles and tortoises are reptiles with shells, and both lay their eggs on land.
The main differences between turtles and tortoises lies in the adaptations they have that allow them to live either on land or in water.
Here are some key differences between turtles and tortoises:
- Turtles are adapted to live in seawater for large parts of their lives, while tortoises are adapted to survive on land.
- Tortoises have domed shells while turtles have streamlined shells that allow them to move through water more easily.
- Tortoises have bulky, elephant-like limbs while turtles have flipper-like appendages.
- Tortoises are mostly herbivorous while turtles have an omnivorous diet that includes sea vegetation, jellyfish, sea sponges and small invertebrates.
- Turtles usually have a shorter life span than tortoises, reaching up to 40 years of age. One of the oldest tortoises is over 180 years old!
The most terrific facts about tortoises
So, you may think you know a lot about the different types of tortoises after everything you’ve read. But, prepare to be surprised.
Here are even more terrific tortoise facts:
- Tortoises have roamed the Earth for more than 200 million years. That means that they were around even before birds, crocodiles, lizards, mammals and snakes.
- A group of tortoises is called a creep.
- The shell colours of the different types of tortoises can tell you more about where they come from. A tortoise species with a lighter-coloured shell would’ve come from a warmer area while tortoises with darker-coloured shells will have originated in areas with a cooler climate.
- Tortoises smell with their throats and the organ that helps them smell is located in the roof of their mouths.
Are you keen to learn even more facts about tortoises? How about travelling to where tortoises live to learn about them first-hand in their natural environments?
You can make these dreams a reality by signing up for a Bushwise Field Guides online or in-country field guiding course. This way you can fast-track your learning and get to know more about tortoises and other animals that live in tortoise habitats.