Wolf spiders are active hunters that eat mostly insects and other small animals. Unlike web-building spiders, they do not wait in sticky webs for prey. Instead, they run, stalk, pounce, or ambush insects on the ground. Their diet often includes houseflies, crickets, cockroaches, grasshoppers, beetles, ants, and other small arthropods. Clemson Extension notes that wolf spiders may hunt actively or wait for prey to pass, reacting to vibrations from wings or walking insects.
What Do Wolf Spiders Eat?
Wolf spiders are carnivorous predators. Their main food is small ground-dwelling invertebrates, especially insects. In gardens, lawns, basements, forests, and fields, they help reduce pest insects naturally. The Australian Museum describes wolf spiders as ground hunters that mostly feed on small invertebrates, mainly insects.
10 Common Foods Wolf Spiders Eat
- Houseflies — common indoor and outdoor prey.
- Crickets — one of their most common ground insects.
- Cockroaches — especially small roaches and young nymphs.
- Grasshoppers — eaten more often by larger wolf spiders.
- Beetles — small beetles can become easy prey.
- Ants — eaten when available, though some ants may fight back.
- Earwigs — soft-bodied enough for many wolf spiders to overpower.
- Moth larvae and caterpillars — common in gardens and leaf litter.
- Other spiders — wolf spiders may eat smaller spiders, including other wolf spiders.
- Small frogs or lizards — rare, but large wolf spiders may attack tiny vertebrates when the chance appears.
Wolf Spider Food Chart
This table shows common wolf spider foods and where they usually find them.
| Food | Where Wolf Spiders Find It | Common or Rare? |
| Houseflies | Homes, patios, gardens | Common |
| Crickets | Lawns, basements, fields | Common |
| Cockroaches | Garages, kitchens, damp areas | Common |
| Grasshoppers | Grasslands, gardens | Occasional |
| Beetles | Soil, mulch, leaf litter | Common |
| Ants | Lawns, cracks, under debris | Common |
| Earwigs | Damp hiding places | Common |
| Caterpillars | Plants and garden beds | Occasional |
| Other spiders | Indoors and outdoors | Occasional |
| Small frogs/lizards | Wet habitats, gardens | Rare |
How Wolf Spiders Catch Their Food
Wolf spiders do not spin food-catching webs like orb-weavers. They rely on speed, eyesight, vibration sensing, and ambush behavior. Some wait quietly until prey walks close, while others actively chase insects across the ground. Clemson Extension says they may respond to vibrations from wings or from prey walking nearby.
Hunting Style
Wolf spiders usually hunt at night, although some are active during the day. They may hide under leaves, stones, wood, mulch, plant pots, or furniture and rush out when prey comes close. Their strong legs help them run fast and jump short distances to grab insects.
Why They Are Good Hunters
Wolf spiders have excellent eyesight compared with many spiders. Their large front-facing eyes help them track moving prey. They also feel tiny ground vibrations, which helps them detect crickets, roaches, beetles, and other crawling insects in dark areas.
What Do Wolf Spiders Eat in the House?
Inside homes, wolf spiders usually eat insects and other small pests. If you see wolf spiders indoors, it may mean there are insects available for them to hunt. They may find food in basements, garages, laundry rooms, storage areas, bathrooms, and dark corners.
Common indoor foods include flies, small roaches, ants, crickets, silverfish, and other spiders. Wolf spiders do not eat human food, wood, clothing, furniture, or houseplants. They are hunters, not fabric pests or pantry pests.
Do Wolf Spiders Eat Cockroaches?
Yes, wolf spiders can eat cockroaches, especially small roaches or young roach nymphs. A large wolf spider may attack a small cockroach if it can overpower it. Clemson Extension lists cockroaches among the prey wolf spiders may eat.
This does not mean wolf spiders can fully control a roach problem. If you see both roaches and wolf spiders, the main issue is likely the roaches. Reducing food scraps, sealing gaps, fixing moisture problems, and cleaning hiding places will help remove both the prey and the spiders hunting them.
Do Wolf Spiders Eat Ants?
Wolf spiders may eat ants, but ants are not always easy prey. Some ants bite, sting, spray defensive chemicals, or attack in groups. A wolf spider is more likely to catch a lone ant than attack a large moving trail.
In yards and gardens, ants can still become part of a wolf spider’s diet. Around homes, ant activity may also attract hunting spiders into cracks, porches, garages, and foundation areas.
Do Wolf Spiders Eat Other Spiders?
Yes, wolf spiders can eat other spiders. Research on wolf spider prey selection notes that wolf spiders feed on diverse insect groups as well as other spiders, and spider prey can form a noticeable part of their mixed diet.
This behavior is one reason wolf spiders can be important predators in natural ecosystems. They do not only eat pest insects; they also compete with and prey on other small predators.
Do Wolf Spiders Eat Plants?
Wolf spiders do not eat plants. They are carnivores and insectivores, which means their diet is based on animal prey, not leaves, roots, fruits, or flowers. If you find a wolf spider in a garden, it is not there to damage plants. It is usually hunting insects around the soil, mulch, or leaf litter.
This makes them helpful in many gardens because they may reduce pests such as crickets, flies, beetles, and caterpillars. However, they are general predators, so they may also eat neutral or beneficial insects when they catch them.
Why Wolf Spiders Enter Homes for Food
Wolf spiders may enter homes accidentally, but food can make them stay longer. If your house has insects, clutter, moisture, or gaps around doors and windows, wolf spiders may find both shelter and prey. Clemson Extension notes that wolf spiders may wander into homes before winter and hide behind doors, windows, plants, closets, or furniture.
Food Sources That Attract Them Indoors
- Small cockroaches
- Ants
- Flies
- Crickets
- Silverfish
- Other spiders
- Insects hiding in clutter
- Bugs attracted by outdoor lights
To reduce wolf spiders indoors, focus on reducing the insects they eat. Vacuum often, clean storage areas, seal cracks, repair screens, use door sweeps, and move firewood or leaf piles away from the foundation.
How Often Do Wolf Spiders Eat?
Wolf spiders do not need to eat every day. Their feeding depends on prey availability, size, temperature, age, and activity level. A hungry wolf spider may eat whenever it catches prey, but it can also survive periods without food.
Young spiderlings need smaller prey such as tiny flies, ants, or small insects. Adult wolf spiders can handle larger prey like crickets, beetles, roaches, and grasshoppers. Females carrying egg sacs or spiderlings may also need more energy.
Are Wolf Spiders Helpful Because of What They Eat?
Yes, wolf spiders are helpful predators in many yards, gardens, fields, and homes. They eat many insects people consider pests. Clemson Extension lists houseflies, crickets, cockroaches, and grasshoppers as possible prey, while the Australian Museum describes them as insect-feeding ground predators.
Still, having many wolf spiders indoors may mean you have too many insects or too many entry points. One spider is usually not a problem. Frequent sightings are a sign to inspect for pest activity, moisture, and gaps around the home.
FAQs
What is a wolf spider’s favorite food?
Wolf spiders mostly prefer small insects and other ground-dwelling prey. Crickets, flies, roaches, beetles, ants, and grasshoppers are common foods. Their exact favorite food depends on what is available in their habitat.
Do wolf spiders eat mosquitoes?
Wolf spiders may eat mosquitoes if they catch them, but mosquitoes are flying insects and are not their main prey. Wolf spiders usually hunt crawling insects on the ground, such as crickets, roaches, ants, and beetles.
Do wolf spiders eat bed bugs?
A wolf spider might eat a bed bug if it finds one, but it will not control a bed bug infestation. Bed bugs hide in cracks, mattresses, and furniture, while wolf spiders usually hunt moving prey on the floor.
Can wolf spiders eat mice?
No, normal wolf spiders do not eat mice. Their usual food is insects and small arthropods. Very large wolf spiders may rarely attack tiny frogs or lizards, but mice are too large for typical wolf spiders.
Should I keep wolf spiders because they eat pests?
Outdoors, wolf spiders are useful because they eat many insects. Indoors, it is better to gently remove them and reduce the pests that attract them. Seal gaps, reduce clutter, and control insects so spiders have less reason to enter.
