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Following puppy growth on Petgood Puppy
At Petgood, there is always something new going on connected to research or evaluation of our pet food products. During 2025-2026, Petgood is involved in a new project, evaluating growth of puppies that have been fed Petgood Puppy during from weaning until 1 year of age.
The aim of the project is to evaluate the growth curve of the participating puppies, from birth until 1 year of age.
The puppies participating in the study are eating Petgood Puppy, a complete and balanced diet developed for optimal growth and development, as their only food from weaning until the end of the project. The mother of the litter has also been eating the same feed during pregnancy and lactation.
Two litters of puppies of large breeds are participating, one litter of labradors and one litter of standard poodles. The puppies are weighed every week for their first 8 weeks of age, and after this they are weighed every month. At every weight, also other comments on their health and feeding is collected from their owners.
Their weights are plotted and compared to Waltham Growth Charts, a tool to evaluate healthy growth and development in puppies of different breeds and sizes.
Growth rates for puppies vary with breed and involve complex interactions between genetics, nutrition, and their environment.
A premium diet, providing the right nutrients in the right amounts, is essential to optimize the health and development of puppies during their important growth period. The goal is growth at the right pace based on the dog’s expected adult weight, in order to lay the best possible foundation for a healthy adult life.
How is the project going?
Right now, in December 2025, we are a little more than half way into the project. The puppies are now 7-8 months old, and all participating puppies are following a stable growth curve towards a healthy adult weight - not too much, and not too little.
We look forward to end of spring 2026, where we will be able to present the project and its results in full.
We would also like to take the opportunity to thank all puppy owners who are contributing weight data from their puppies – you are the foundation of the project and we are so happy for your participation!
Deep-dive in the project
Curious to learn more? Below you can find some more information on the current project.
The Waltham Puppy Growth Charts were developed by a team of veterinarians, nutritionists and statisticians, to be used as a tool for growth monitoring during development. The set of 10 growth charts represents the standards for healthy growth of both male and female dogs, up to an adult weight of 40kg.
Data from 50,000 young healthy dogs was used to scientifically develop the centiles or growth curves on the puppy growth charts. In human healthcare, similar charts are used for careful monitoring of the growth of children.
