A baby giant anteater rides on its mother's back
Threatened

Giant Anteater

Myrmecophaga tridactyla
Myrmecophaga tridactyla
  • CLASS: Mammalia (Mammals)
  • ORDER: Edentata
  • FAMILY: Myrmecophagidae
  • GENUS: Myrmecophaga
  • SPECIES: tridactyla

ABOUT

Profile of an adult giant anteater, displaying its long nose.
The giant anteater's sense of smell is 40 times more powerful than ours.

Looks can be deceiving: Its name is a hint to one of its favorite foods, and you can't miss its long snout, but there's more to the story of the giant anteater! This unique animal is the largest of the three anteater species (the other two are the tamandua or lesser anteater and the silky anteater). The giant anteater is about the size of a golden retriever, but thick, bushy hair makes it look even bigger. 

The anteater's gray hair feels like straw and grows especially long on the tail (up to 16 inches or 40 centimeters), and it sports a stylish stripe of black that stretches from under the nose to the middle of the back. This stripe is outlined in white, tan, or gray and goes down to a black ring around the base of the front feet. The hairy, bushy tail is often used as a blanket or sunshade. The giant anteater’s elongated head and nose are perfectly designed to get in and out of a termite mound or anthill.

An adult giant ant eater walking towards the camera
The giant anteater's claws curl up into their feet when they walk, in order to keep their claws from wearing down and losing their sharpness.

Giant anteaters walk with a slow shuffle on all four legs with their nose pointed to the ground. They don’t walk on their feet; instead, with the claws curled up into the feet, anteaters walk on their "fists." This helps to keep the claws sharp so anteaters can dig into ant mounds or defend themselves from predators. Anteaters are also good swimmers, using the freestyle stroke and with their long snout as a snorkel.

HABITAT AND DIET

A baby giant anteater extending its long tongue out of its mouth as it rides on its mother's back.
The giant anteater has the longest tongue in relation to its body size of any mammal, as displayed by this baby anteater.

Can you imagine eating nothing but ants all day long? Giant anteaters have no teeth, but a specialized tongue allows them to eat up to 30,000 ants and termites each day.

Giant anteaters range from Honduras in Central America to the Gran Chaco region of Bolivia in South America, and are found in tropical and dry forests, savannas, and grasslands. These animals are perfectly designed to feed on ants, which is great, because ants are a very reliable food source. The anteater's narrow tongue is about 2 feet (60 centimeters) long and is shaped like a strand of spaghetti. This amazing tongue has teeny, backward-pointing spines covered in sticky saliva that aid in feeding. Relying on its acute sense of smell, the giant anteater detects an ant mound and swiftly rips into it with its sharp, formidable claws. It then darts its tongue inside (up to 150 times per minute!), picking up the worker ants with that sticky saliva. 

The anteater only feeds at one mound for about a minute before moving on. After all, the animal doesn't want to totally wipe out its source of food! With a mouthful of delicious insects, the anteater crushes them against the roof of the mouth, and its very muscular stomach further pulverizes the food. Anteaters may also lick at fallen fruit and eat soft grubs. 

At the San Diego Zoo, giant anteaters are offered commercial pellets made for insectivores, which gives them the same nutrients they would get in the wild. The pellets are small enough for the anteaters to pick up with their tongue.

FAMILY LIFE

A baby giant anteater rides on its mother's back, holding on tight to her coarse, long hair.
Giant anteater pups spend the first year of life hitching a ride on their mothers' backs.

Giant anteaters are usually solitary mammals, but do come together to mate and raise their young. In the wild, they breed between March and May but are more flexible in zoos and may mate at any time of the year. An adult female giant anteater gives birth to a single baby (twins are rare) while in a standing position, propped up by her strong tail. When a pup (baby) is born, it has a full coat of hair and is almost identical to the adult. The pup spends the first year of life hitching a ride on its mother's back; similar coloring helps the pup blend in so predators can't see it. It also makes the mother look larger and less tempting to predators. 

For the first four weeks of its life, the pup never leaves its mother. While she lies on her side, the baby tucks itself underneath her front legs to nurse for up to an hour at a time, drinking about 10 percent of its body weight each day. When the mother gets up to walk around, the baby scurries up her back and goes along for the ride. Giant anteaters do not vocalize much, but the pup can let out a shrill, high-pitched grunt to alert Mom when in distress. After the first month, the pup begins to spend more time on the ground, although it still rides on the mother’s back quite frequently. The pup is usually weaned at about nine months of age and leaves its mother when it is full grown, at about two years of age. 

Giant anteater pups have a 50 percent mortality rate in the first three months of life. They are very susceptible to pneumonia and other health-related problems.

AT THE ZOO

The San Diego Zoo’s first anteaters arrived from Paraguay in 1937, and we’ve had them on and off over the years since. We welcomed the first birth of a baby giant anteater at our zoo in 1980.

Giant anteaters Lucy and Kane were part of a group of 14 giant anteaters imported from Paraguay in 2002 by the Nashville Zoo. Although male giant anteaters are larger than the females, when they arrived in San Diego in 2003, we discovered that Lucy outweighed Kane by 25 pounds (11 kilograms)! Lucy would not cooperate with Kane during breeding attempts; instead, she would just push him over. Hoping for a baby and noting Lucy’s calm disposition around her keepers, she was trained for ultrasound procedures to detect a pregnancy. Kane finally prevailed, and in 2006, their first offspring together was born. 

Today, Lucy shares an exhibit with a male anteater named Orion near Skyfari West, next to the mountain lions. Since breeding is unlikely due to Lucy's age, this is more of a companion pairing.

CONSERVATION

Giant anteaters are not endangered yet, but they have already disappeared from much of their habitat due to habitat loss, especially from fires in grassland regions, and hunting, both for food and as pests. Vehicles often hit the animals while they lumber across a road, and they also get killed by pet dogs. It is estimated that only 5,000 giant anteaters are left in the wild, while a small number (around 90) live in zoos in the US. 

Giant anteaters have been around for 25 million years, and we hope that they can nose their way into the next million. You can help us bring other species back from the brink by supporting the San Diego Zoo Global Wildlife Conservancy. Together we can save and protect wildlife around the globe.

Save Wildlife. Help us keep this and other species from disappearing forever.

LIFE SPAN

Median life expectancy is 10.5 years for females, 14.8 years for males

YOUNG

Gestation: About 190 days

Number of young at birth: Usually 1

Weight at birth: 3 pounds (1.4 kilograms)

Age of maturity: 2 to 3 years

SIZE

Length: 40 to 48 inches (100 to 120 centimeters)

Weight: 60 to 140 pounds (27 to 64 pounds; males are heavier than females

Tail length: 28 to 35 inches (70 to 90 centimeters)

FUN FACTS

The giant anteater has the longest tongue in relation to its body size of any mammal.

The giant anteater's sense of smell is 40 times more powerful than ours.

A giant anteater is not immune to ant bites, so it feeds at an ant or termite colony for just a minute or so before moving on.

Giant anteaters have one of the lowest body temperatures for a mammal, 91 degree Fahrenheit (32.7 degrees Celsius), presumably in response to their low-calorie insect diet.

A giant anteater leaning over the water at the Zoo.

I Love Lucy (the Giant Anteater)

She puts the giant in giant anteater. The fluffy, striped, long-nosed, golden retriever-sized animal has been at the Zoo since 2002...

http://zoonooz.sandiegozoo.org/2016/07/20/i-love-lucy-the-giant-anteater/

DISCOVER WILDLIFE

More Animals & Plants from San Diego Zoo and San Diego Zoo Safari Park