Spiders eat a wide range of small animals. The answer to what spiders eat depends on the species, size, and habitat.
Most arachnids feed on insects. Some also eat other spiders, small reptiles, and a few plant-based foods.
Spider diet connects to how they live. Different spiders hunt in different ways and target different meals.
Some wait in webs. Others chase or ambush passing animals.
What spiders eat can be ordinary in one species and surprising in another.
What Spiders Usually Feed On
Most spider species overpower prey and turn it into liquid. In the wild, they usually catch small animals, with insects making up the biggest part of the menu.
Common Prey Like Insects, Mites, And Worms
Many spiders eat flies, moths, mosquitoes, beetles, crickets, and grasshoppers, as noted by Science ABC. Smaller prey like mites and worms can also be part of the spider diet, especially for tiny or young spiders.
Because spiders cannot chew solid food, they use venom and digestive fluids to liquify prey before feeding.
When Spiders Eat Other Spiders Or Small Animals
Some spider species eat other spiders when the chance comes up. A few larger kinds can catch small lizards, birds, or fish.
Larger hunting spiders tackle bigger prey more often than web-builders do.
Rare Exceptions Such As Bagheera kiplingi
Bagheera kiplingi, a jumping spider, feeds mostly on Beltian bodies from ant-acacias and some nectar, according to Science ABC. This species stands out because most spiders are meat eaters, not plant feeders.
How They Catch And Consume Food
Spiders use different methods to catch food, from silk traps to fast chases. Their hunting style shapes the kind of prey they catch and how often they feed.
Web Traps And Web-Building Spiders
Web-building spiders spin silk to trap flying insects and crawling pests. When prey hits the web, the spider moves in, bites, and injects venom that helps break down the meal.
Active Hunters Such As Wolf Spiders And Jumping Spiders
Wolf spiders and jumping spiders hunt by moving toward their prey instead of waiting for it to get stuck. They use sharp eyesight, speed, and quick strikes to catch insects on the ground or on plants.
These hunting spiders often eat prey soon after capture, while it is still fresh.
Ambush Predators And Fishing Spiders
Ambush predators stay still and attack when prey comes close, which helps them save energy. Fishing spiders use water edges to catch insects and even small aquatic animals.
These methods show how flexible spider hunting can be across different habitats.
How Feeding Changes By Life Stage And Conditions
Spider feeding changes as they grow. It also shifts with food supply and environment.
Young spiders eat smaller prey. Adults can handle larger meals and longer gaps between feedings.
What Spiderlings Can Eat
Spiderlings usually eat tiny prey such as very small insects or mites. As they grow, they can take on larger food items and use the same basic feeding process as adult spiders.
Their size limits what they can catch, so small prey matters most at first.
How Often Spiders Eat
How often spiders eat depends on prey availability and the spider’s size, age, and activity level. According to Science ABC, some spiders can go weeks after a good meal before hunting again.
Others eat more often when food is easy to find.
Why Size, Habitat, And Opportunity Matter
A spider in a rich habitat with lots of insects may feed more often than one in a dry or quiet area.
Bigger spiders handle larger prey. Smaller ones focus on tiny meals.
Opportunity matters too, because spiders often eat whatever suitable prey comes close enough to catch.
