Companion Animals

Companion Animal Welfare and Canine Parasite Prevention 2026

Parasite prevention for dogs has advanced in 2026, with new products providing broader protection and clearer guidance on year-round management.

Key Facts

Tick-borne diseases including Lyme disease, babesiosis, and anaplasmosis are increasing with climate change
Fleas cause pruritus, allergic dermatitis, and can transmit tapeworms and cat scratch disease
Lungworm (Angiostrongylus vasorum) is spreading northward and is fatal if untreated
Spot-on treatments provide integrated flea, tick, and worming protection in a single application
Year-round parasite prevention is now recommended for most dogs given climate-related range expansion

Welfare Considerations

Parasites cause ongoing discomfort, serious disease, and death. Year-round preventive care protects dogs from the full range of parasite-related welfare problems.

What You Can Do

Establish year-round parasite prevention with your vet
Use veterinary-recommended products rather than over-the-counter alternatives
Test for heartworm and lungworm annually in high-risk regions