Can spiders bite pets?

Spider bites on pets are uncommon. Most encounters cause no issues at all. The majority of house spiders are harmless to pets.

Gene Wright began professional pest work in 1998, and founded Planet Friendly Pest Control in 2010 to bring that experience to homeowners across Northern Virginia and Southern Maryland.

Pet owners ask this question out of concern for their dogs and cats—especially when spiders are spotted near floors, basements, or garages.

In reality, spiders avoid animals just like they avoid people. They don’t hunt pets, and they don’t seek contact.

Most spiders found indoors are focused on catching insects. Pets usually notice spiders out of curiosity, not because spiders are aggressive.

Seeing spiders does not mean your pets are at risk.

In the rare case a pet is bitten, it usually happens when a spider is accidentally trapped or disturbed. Even then, reactions are typically mild or go unnoticed.

For most homes, spiders are a nuisance issue—not a pet safety issue. The presence of spiders says more about insect activity than danger.

Professionals don’t treat spiders as a pet hazard.

The focus is on understanding why spiders are present in the first place—almost always because insects are active around the home.

The process starts with an inspection to identify:

By reducing insect pressure outside the home, spiders naturally disappear. Interior treatment is only used when activity is excessive.

This approach protects pets by minimizing exposure and avoiding unnecessary treatments.

• Insect entry points
• Areas where spiders are active
• Exterior conditions attracting pests

You can keep pets safe and reduce spider encounters with simple steps:

Avoid foggers or DIY sprays. These don’t prevent spiders and can create unnecessary exposure for pets.

• Keep basements and garages uncluttered
• Seal obvious gaps around doors and foundations
• Remove visible webs when noticed
• Reduce exterior lighting that attracts insects
• Monitor areas where pets spend time

If spiders are appearing frequently in areas where pets spend time, it’s usually a sign insects are still active.

A professional inspection can identify the cause and correct it without over-treating the home.

That kind of prevention keeps both your home and your pets comfortable and safe.

Do spiders attack pets? No. Spiders avoid animals.

Are spider bites on pets dangerous? Very rarely, and usually mild.

Should I worry if my pet plays near spiders? No. Most encounters cause no harm.

Written by Planet Friendly Pest Control, serving Northern Virginia and Southern Maryland since 1998. This guidance reflects decades of hands-on inspection experience using outside-first, minimal-product pest control methods focused on long-term prevention and home protection.

Start With a Professional Spider Inspection