10 strange animals that live secretly in your house

10 strange animals that live secretly in your house

Our houses host a surprising amount of wildlife – here are 10 secret dwellers to look out for.

Published: October 16, 2024 at 1:07 pm

Our homes may seem like places separate from the natural world, but look a little closer and you'll discover they're alive with hidden life.

Most of these miniature lodgers are harmless, even if they seem a little unsettling. Here, we reveal 10 of the most common.

10 animals that live in your house

Silverfish

Silverfish
Silverfish are one of the most ancient insects on the planet/Getty

These sleek, silvery insects are drawn to dark, damp spots, such as bathrooms and basements. Silverfish feed on starches, including paper and wallpaper paste. While they won’t harm you, they can cause damage to your belongings if left unchecked.

Booklice

Booklouse
Booklice are also known as barklice or barkflies/Getty

Despite their name, booklice aren’t true lice. They thrive in humid areas and feed on mold, fungi and organic material found in old books and wallpaper. Harmless to humans, booklice are more of a nuisance if they find a steady food source.

Carpet beetles

Carpet beetle
There are more than 1,800 species of described carpet beetles/Getty

Common in homes filled with natural fabrics, carpet beetles hide in undisturbed places, such as attics or under heavy furniture. Their larvae feed on wool, silk and other fibres, often going unnoticed until the damage is done.

Fungus gnats

Fungus gnats
Fungus gnats are also known sciarid flies/Getty

Fungus gnats are tiny flies that appear around houseplants, drawn to moist soil. While they don’t bite or harm humans, their larvae feed on decaying organic matter and can sometimes damage plant roots.

House mice

House house
House mice are 7–10cm in length/Getty

House mice are among the most common creatures secretly living indoors. These small rodents slip through tiny cracks in search of food and warmth, nesting behind walls or in cluttered spaces. While some homeowners may considered them unwelcome guests, humane traps can help remove them safely.

House spiders

House spider
House spiders are more commonly seen in autumn/Getty

A familiar face in quiet corners, house spiders help keep insect populations down. They rarely bother humans and prefer to spin their webs in secluded areas. Though their webs may be to your taste, spiders are nature’s pest control, doing more good than harm.

Bats

Brown long-eared bat
Brown long-eared bat – one 18 species of bat in the UK/Getty

Sometimes, a small bat might take up residence in your attic, seeking warmth and safety. Bats are shy creatures and pose no harm to people, but their droppings (guano) can build up over time.

Clothes moths

Clothes moth
Clothes moths are beige in colour/Getty

The tiny clothes moth is often overlooked until you discover its handiwork – small holes in your favourite woollen or silk garments. These insects thrive in dark, undisturbed spaces such as wardrobes, where their larvae feast on natural fibres.

House dust mites

House dust mite
House dust mites like warm, humid conditions/Getty

Invisible to the naked eye, dust mites thrive in bedding, carpets and furniture. Feeding on dead skin cells, they’re generally harmless but can aggravate allergies or asthma with their waste. Almost impossible to detect without a microscope, these little mites are constant but unseen housemates.

Bed bugs

Bed bug
Bed bugs can live up to a year without eating/Getty

Expert at hiding, bed bugs prefer mattresses, bed frames and headboards, emerging at night to feed on human blood. They leave itchy bites as their calling card, and a small infestation can quickly grow if unnoticed.

Each of these creatures plays a small part in the ecosystem, even within our homes, reminding us that nature is never far away – even indoors.

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