10 Interesting Aardvark Facts: Evolution, Ecology, and More
Have you ever wondered about an animal that looks like a pig, has rabbit ears, and a kangaroo tail? Let's explore some fascinating aardvark facts. The aardvark (Orycteropus afer) is an odd-looking nocturnal mammal that calls sub-Saharan Africa home. People also call it the "earth pig" or "African ant bear."
Aardvarks have unique tubular teeth that grow constantly and lack enamel. They eat ants and termites with their long, sticky tongue. These diggers have existed for 55 million years, longer than many other mammals. Despite their name, aardvarks are closer relatives of elephants than pigs.
Intrigued? Read on to learn more facts about the aardvark and what makes them truly unique.
Related read: Anteater Facts.
13 Facts about Aardvarks
1. Aardvarks are the sole survivors of the ancient order Tubulidentata, evolving distinct features over 55 million years.
Aardvarks are the last living members of the order Tubulidentata. Their evolutionary journey spans 55 million years, making them unique in the animal kingdom.
Unlike anteaters or pangolins, aardvarks belong to the superorder Afrotheria, which also includes elephants, manatees, and hyraxes. Lehmann's 2009 study found aardvark ancestors in fossils from 20 million years ago5.
Over time, aardvarks developed distinct features. Their snouts grew longer, their teeth became specialized tubes, and their limbs evolved for digging. These adaptations allowed them to thrive on ants and termites.
2. Aardvarks possess unique tubular teeth made of vasodentin that continuously grow throughout their lives.
What's unique about aardvarks? Their teeth are truly one-of-a-kind. The Aardvark order, Tubulidentata, is named for its unique tooth structure.
Aardvark teeth facts:
- Made of vasodentin, not enamel
- Grow throughout their lives
- Shaped like tubes
These teeth, resulting from millions of years of evolution, form a tough grinding surface perfect for their diet of ants and termites (Rensberger and Koenigswald4). Most insect-eaters have enamel-coated teeth. But Aardvarks' vasodentin teeth work better for grinding.
3. Aardvarks can consume up to 50000 insects nightly with their 12-inch-long sticky tongue.
Ever wondered about an aardvark's eating habits? These insectivores have amazing feeding adaptations.
Aardvarks eat mainly ants and termites. Their tongue is key to this diet. It can stretch up to 12 inches (30 cm) long. A special gland covers it with sticky saliva, which helps them catch insects easily.
Aardvarks are big eaters. Taylor and Skinner (2004) found that one aardvark can eat up to 50,000 ants and termites in a single night7. They use their strong claws to dig into termite mounds in search of their dinner.
Furthermore, their muscular stomachs help them break down tough insect shells.
4. Aardvarks are soil engineers and seed dispersers.
How do aardvarks affect their ecosystem? These odd-looking mammals are vital to Sub-Saharan African habitats.
As master diggers, aardvarks improve soil health. Their underground burrows do several things:
- Mix air into the soil
- Help nutrients move around
- Make the soil structure better for plants
Platt et al. (2016) found that aardvark digging blends soil layers1. This helps plants grow and supports tiny life forms in the soil. Their burrows also give homes to other animals, from small furry creatures to birds.
Aardvarks also have a particular job as seed spreaders. They're essential for a plant called the aardvark cucumber. They eat the fruit and poop out the seeds, helping new plants grow. Without aardvarks, this cucumber might have trouble surviving.
Related read: Read more about other aardvark-like diggers in our armadillo facts and badger facts.
5. Aardvarks possess unique physical features perfectly adapted to their lifestyle.
Ever wondered what an aardvark looks like or how it's built for survival? These odd-looking mammals are nature's digging experts.
Aardvarks are medium-sized. They measure 3.4 to 4.2 feet long and weigh 88 to 143 pounds. Females often outweigh males.
Their most eye-catching feature is a long, pig-like snout. This nose is a smell powerhouse and can sniff out insects hiding underground. Their rabbit-like ears are huge, about 6 inches long. These ears pick up the slightest sounds of danger.
Aardvarks are built for digging. Their limbs are strong and sturdy. Each foot has four toes with sharp, shovel-like claws. These claws can grow up to 2 inches long and are perfect for ripping into termite mounds and ant nests.
An aardvark's thick, muscular tail helps in many ways. It keeps them balanced when walking and props them up when they stand on their hind legs. Endo et al. (2013) found it even works as a defensive weapon.
Their skin is tough and leathery, covered in sparse, yellowish-grey hair. This combination protects them from insect bites and scratches while digging.
Every part of an aardvark's body serves a purpose. From their super-sniffer nose to their digging-machine feet. They're perfectly adapted for their nighttime, insect-eating lifestyle in Africa.
Aardvarks are sometimes confused with anteaters. Read about the differences in our detailed breakdown of the Aardvark vs. Anteater.
6. Aardvarks can slow their heartbeat to 20 beats per minute.
An Aardvark heart rate is a marvel. It can slow to 20 beats per minute when resting or speed up to 180 when active. This helps them save energy or react quickly as needed.
Aardvarks are also great at controlling their body heat. During food shortages, they can lower their temperature by up to 10°C. Their kidneys are super-efficient, too. They can concentrate urine ten times more than most mammals, saving water in dry areas.
A 2017 study by Rey et al. showed these tricks help aardvarks handle drought and changing climates2. These nocturnal animals can even slow down their body processes by 60% in tough times. Scientists are now studying how aardvarks change their nighttime feeding habits as their environment shifts.
7. Aardvarks are surprisingly agile, sprinting at 25 mph and swimming proficiently despite their bulky appearance.
How fast can an aardvark run? Believe it or not, these odd-looking animals are speed demons. Aardvarks can sprint at 25 mph (40 km/h). That's faster than many of their predators!
But speed isn't their only trick. Aardvarks are also great swimmers. Their partially webbed toes help them paddle through the water with ease.
These skills serve aardvarks well in the wild. On land, they can outrun lions and leopards in short bursts, and in water, they cross rivers without breaking a sweat.
Their speed helps them escape danger in open areas, and their swimming allows them to find food and shelter across water barriers.
Who knew such a strange-looking animal could be so agile? Aardvarks prove that looks can be deceiving in the animal kingdom.
8. Aardvark burrows serve as biodiversity hotspots, providing shelter for numerous other species.
Aardvark burrows are vital for biodiversity in sub-Saharan Africa. These underground homes support many other animals.
A study by Whittington-Jones et al. (2011) found over 27 species using these burrows3. Warthogs, hyenas, and various reptiles seek shelter here. The burrows protect them from predators and harsh weather. Old burrows are especially useful as thermal refuges.
9. Aardvark reproduction and life cycle are uniquely adapted to their solitary nocturnal lifestyle.
How do aardvarks reproduce? These odd-looking animals have a unique approach. Aardvarks mate from June to October. The female carries her baby for seven months. The newborn weighs about 4.4 pounds.
Mom aardvarks are devoted parents. They nurse their calves for 3-4 months. Young aardvarks grow quickly, reaching sexual maturity at two years old.
The Journal of Zoology reports that females usually have one calf per year. This slow breeding rate fits their solitary, nocturnal lifestyle. It also means every birth counts for aardvark numbers in the wild.
Lifespan and Mortality:
How long do aardvarks live? In the wild, they typically survive 8-23 years. Zoo aardvarks can live up to 25 years. Why the difference? Wild aardvarks face more dangers. Predators and harsh environments pose constant threats. Their night-time habits and burrowing skills help them stay safe. These traits contribute to their potential for long life when conditions are good.
10. Aardvark conservation status and the impact of human activities on their populations.
Are aardvarks endangered? How do humans affect them?
Aardvarks aren't endangered yet, but they're facing challenges. The International Union for Conservation of Nature (IUCN) lists them as "Least Concern." Don't let that fool you, though. In many areas, aardvark numbers are dropping.
What's causing this decline? Humans are the main culprits:
- We're turning wild areas into farmland, destroying aardvark homes.
- Climate change is making it harder for aardvarks to find food and suitable places to live.
- In some regions, people hunt aardvarks for meat or traditional medicine.
A 2017 study by Lindsey and others found that habitat loss and climate change are big threats6. To help, some wildlife reserves in Africa are working to protect aardvark habitats.
Why does this matter? Aardvarks are nature's health checkers. Their presence tells us if an ecosystem is doing well. By protecting aardvarks, we're looking after entire African ecosystems.
Want to help? Support groups that protect Aardvark homes and fight climate change. Every little bit counts for these unique animals.
Conclusion
Aardvarks are amazing animals. They're the last of their kind, having survived for about 55 million years. Their teeth are unique—they're tube-shaped and keep growing, which helps them eat lots of ants and termites.
These odd-looking creatures are more than just interesting. They're important for Africa's ecosystems. Aardvarks dig burrows that other animals use for homes. They also help control insect populations by eating them.
Let's care about these unique animals. They're a living piece of Earth's history. We can all help by learning about aardvarks and supporting efforts to protect them. Our actions today can keep aardvarks around for future generations to see and appreciate.
Aardvark FAQS
Aardvarks can sprint at speeds up to 25 miles per hour, making them surprisingly agile for their size.
Aardvarks primarily eat ants and termites, using their 12-inch-long, sticky tongues to consume up to 50,000 insects each night.
Aardvarks are not currently endangered, but habitat destruction and human activities threaten their populations.
Over 55 million years, aardvarks have evolved distinct features, including unique tubular teeth and specialized burrowing abilities, which help them adapt to their environment.
Aardvarks play a key role by aerating the soil and dispersing seeds, contributing to the health and diversity of African ecosystems.
Related: To further explore the animal kingdom, check out some of the other animals that start with A.
Glossary Terms:
| 1 | Platt, Brian & Kolb, Dakota & Kunhardt, Christian & Milo, Scott & New, Lee. (2016). Burrowing Through the Literature: The Impact of Soil-Disturbing Vertebrates on Physical and Chemical Properties of Soil. Soil Science. 181. 175-191. 10.1097/SS.0000000000000150. |
| 2 | Rey, B., Fuller, A., Mitchell, D., Meyer, L. C., & Hetem, R. S. (2017). Drought-induced starvation of aardvarks in the Kalahari: an indirect effect of climate change. Biology Letters, 13(7), 20170301. |
| 3 | Whittington-Jones, G. M., Bernard, R. T., & Parker, D. M. (2011). Aardvark burrows: a potential resource for animals in arid and semi-arid environments. African Zoology, 46(2), 362-370. |
| 4 | Rensberger, J. M., & Koenigswald, W. V. (1980). Functional and phylogenetic interpretation of enamel microstructure in rhinoceroses. Paleobiology, 6(4), 477-495. |
| 5 | Lehmann, T. (2009). Phylogeny and systematics of the Orycteropodidae (Mammalia, Tubulidentata). Zoological Journal of the Linnean Society, 155(3), 649-702. |
| 6 | Lindsey, P. A., Petracca, L. S., Funston, P. J., Bauer, H., Dickman, A., Everatt, K., Flyman, M., Henschel, P., Hinks, A. E., Kasiki, S., Loveridge, A., Macdonald, D. W., Mandisodza, R., Mgoola, W., Miller, S. M., Nazerali, S., Siege, L., Uiseb, K., & Hunter, L. T. (2017). The performance of African protected areas for lions and their prey. Biological Conservation, 209, 137-149. |
| 7 | Taylor, W. A., & Skinner, J. D. (2004). Adaptations of the aardvark for survival in the Karoo: a review. Transactions of the Royal Society of South Africa, 59(2), 105-108. |
Chinny Verana is a degree-qualified marine biologist and researcher passionate about nature and conservation. Her expertise allows her to deeply understand the intricate relationships between marine life and their habitats.
Her unwavering love for the environment fuels her mission to create valuable content for TRVST, ensuring that readers are enlightened about the importance of biodiversity, sustainability, and conservation efforts.
Fact Checked By:
Mike Gomez, BA.
