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Mole (animal)

life science Maturity 11-13 Next article →

Moles are small, subterranean mammals that spend most of their lives underground.

Kret mole
Kret mole

The term most commonly refers to species within the family Talpidae. These animals possess cylindrical bodies and very small, inconspicuous eyes and ears. They have reduced hindlimbs and short, powerful forelimbs. Their large paws are specifically adapted for digging through soil. While some gardeners view them as pests, moles provide essential services to ecosystems. They assist with soil aeration and eat small creatures that damage plant roots.

Talpidae family pictures
Talpidae family pictures

To survive in low-oxygen environments like burrows, moles have developed unique biological mechanisms. They can tolerate higher levels of carbon dioxide than most other mammals. This is because their blood cells contain a special form of hemoglobin. This hemoglobin has a higher affinity for oxygen, meaning it grabs oxygen more easily. Moles also use oxygen more effectively by reusing exhaled air.

Talpa europaea MHNT pate
Talpa europaea MHNT pate

Their physical structure is also highly specialized for life in tunnels. Each forepaw is polydactyl, meaning it has extra digits. They possess an extra thumb known as a prepollex. This bone develops from a transformed sesamoid bone in the wrist during embryogenesis. This trait is species-specific and is not found in shrews, their closest relatives.

Dietary habits are central to a mole's survival in the dark. Moles are omnivores, but they primarily eat earthworms and other small invertebrates. They use their tunnels as "worm traps" to catch prey. When a mole senses a worm in the tunnel, it runs quickly to catch it. A fascinating part of their biology is their toxic saliva. This saliva contains a toxin that can paralyze earthworms. This allows moles to store living prey in underground "larders" for later meals. Some researchers have discovered larders containing over one thousand earthworms.

Scapanus latimanus2
Scapanus latimanus2

The star-nosed mole is particularly efficient, catching food faster than the human eye can follow.

Classification of these animals has changed as scientific understanding has grown. Moles were traditionally placed in the order Insectivora. However, scientists abandoned that order because it was not monophyletic. Moles are now classified in the order Eulipotyphla, which includes shrews and hedgehogs. The family Talpidae is divided into several subfamilies. The subfamily Scalopinae includes New World moles. The subfamily Talpinae includes Old World moles and desmans. There are many specific genera within these groups, such as the genus Talpa in Europe and western Asia.

Uropsilus1sm
Uropsilus1sm

Other groups include the genus Scapanus, which contains five species of Western North American moles.

Reproduction and social structures vary by species. Breeding seasons generally occur between February and May. Moles are mostly solitary creatures that only come together to mate. Males may fight fiercely if they meet. The gestation period, or the time a mother carries young, depends on the species. For the Eastern mole, this period is approximately 42 days. They typically give birth to three to five young in the spring. Townsend's moles have a gestation period of about one month and produce two to four young.

Scapanus latimanus2
Scapanus latimanus2

Some animals are called moles even though they are not part of the Talpidae family. This is due to convergent evolution, where unrelated animals develop similar traits. The African golden moles and Australian marsupial moles are primary examples.

Kret workowaty
Kret workowaty

Golden moles are more closely related to elephants and manatees than to true moles. Marsupial moles are even more distant, as they are marsupials like kangaroos. They are distinguished from true moles by shovel-like patches on their noses. These patches help them swim through sandy soils.

Humans have had many interactions with moles throughout history. Their pelts are famous for a velvety texture. Unlike surface animals, mole fur has no particular direction to its nap. This allows the mole to move backward easily without the fur being "brushed the wrong way." In the past, mole fur was a fashion item. Queen Alexandra once ordered a mole-fur garment to create a demand for the material.

Today, the term "moleskin" is used for a tough cotton fabric. While they can damage crops or drainage systems, they remain a vital part of the natural world.

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🖼️ Images & Media (10)
File:Kret mole.jpg
Kret mole.jpg
File:Talpidae_family_pictures.png
Talpidae_family_pictures.png
File:Talpa europaea MHNT pate.jpg
Talpa europaea MHNT pate.jpg
File:Uropsilus1sm.jpg
Uropsilus1sm.jpg
File:Scapanus latimanus2.jpg
Scapanus latimanus2.jpg
File:Kret workowaty.jpg
Kret workowaty.jpg
File:Debenham and Freebody ad 1921 1 ISaDN.jpg
Debenham and Freebody ad 1921 1 ISaDN.jpg
File:Krtek1.jpg
Krtek1.jpg
File:Op scherp staande mollenklem.jpg
Op scherp staande mollenklem.jpg
File:Dead moles on display hung on a fence.jpg
Dead moles on display hung on a fence.jpg
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