Do Dogs Need Deworming in Spring?

Disease Prevention πŸ“… August 9, 2026 πŸ‘ 2878

πŸ“ Summary

Parasites by site split into internal and external, both harming dog health and slowing puppy growth, and causing other disease. Let's see whether spring deworming is needed.

1 Overview

Common internal parasites: roundworm, tapeworm, heartworm, hookworm, coccidia.

Common internal infection signs: thinness, poor development, diarrhea, abdominal pain, vomiting, bloody stool; severe cases tremors and nerve signs.

Common external parasites: mites, lice, fleas, ticks.

External parasites trigger various skin diseases, possibly with intense itch, thickened skin, scabs.

Deworming time

Internal: puppies start at about 2 weeks, every 2 weeks until 6 months, then every 3 months.

External: April-October is key season, monthly.

Dose by weight; reactions like diarrhea, vomiting, lethargy may appear – consult a vet before and after.

How to deworm

Internal deworming

1. Oral dewormer

2. Take with or after food.

External deworming

1. Mostly spot-on or spray.

2. Spray: against the hair over the whole body, avoid the head; no bath for 3 days after so the drug spreads.

3. Spot-on: part the neck hair, apply in a line on the skin.

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