Worming Puppies: A Simple Guide for Breeders

July 20, 2025

Worming Puppies Made Easy

Breeding puppies? Learn when and how to worm them safely. A simple guide to protect your pups and keep your breeding program healthy.

Worming Puppies: A Simple Guide for Breeders

Raising a litter is exciting — but it also comes with serious responsibilities, including proper worming. Puppies are born with a high risk of internal parasites, and without early treatment, worms can quickly lead to poor growth, illness or even death.

Whether you're new to breeding or refining your protocol, this guide walks you through the essentials of puppy worming — when to do it, what to use, and how to keep your pups thriving.

Why Are Puppies So Prone to Worms?

Puppies can contract worms:

Before birth, via the placenta

After birth, through the mother’s milk

From the environment, especially in multi-dog homes or outdoor areas

Roundworms and hookworms are the most common threats in the first few weeks. Early and consistent worming is vital.

Puppy Worming Schedule (General Guide)

2 weeks of age – First treatment
Every 2 weeks – Until 12 weeks of age
Monthly – From 3 to 6 months
Every 3 months – From 6 months onward

Also worm the dam at the same intervals — especially during pregnancy and lactation. Ensure the wormer is considered safe for pregnant and lactating bitches such as Milbemax.

Choosing the Right Wormer for Puppies
Always use a wormer:

Formulated for puppies
Suitable for their age and weight
That targets roundworms and hookworms, the most common in neonates

Oral suspensions such as Drontal or very small tablets such as Milbemax for Small Dogs and Puppies are ideal for young pups. Browse our Worming Dog range for recommended options that are safe, effective, and easy to administer.