The cold weather has led to a 70% increase in sales of dog coats, according to Pets at Home.
The retailer says that sales of products to keep pets warm, which also includes rabbit hutches, helped it to achieve strong sales.
Like-for-like sales - which exclude the impact of new store openings - in the six weeks to 7 January were up 6.7% compared with last year.
In that period it also sold over a thousand tonnes of wild bird food.
The company's like-for-like sales for the year ending 7 January were up 9.8%.
In a statement, Pets at Home chief executive Matt Davies said 2009 had been a good year for the retailer.
"Our performance has been very strong all year and I am pleased that despite the bad weather we were also able to deliver a good sales performance over the Christmas period," he said.
Pets at Home offers the ultimate pet shop experience. It really is a paradise for pets and pet owners. We have all the pet supplies, pet food, toys and accessories you and your pet need at great value prices.
All our store colleagues are fully trained in pet care and dedicated to the welfare of your animals, with most of them being experienced pet owners themselves. So whether you are a new owner or an expert, our store colleagues are on hand to help you make the right choices. We also have a fantastic range of free, informative care sheets for you to take away, offering help and advice on how to look after your pet.
In 2007, in recognition of our achievements, we won Retail Week's Specialty Retailer of the Year award.
We believe in and promote responsible pet ownership. Not only are pets great companions and family members but there is evidence that they can help reduce stress in adults and help children to learn about life and even do better at school!
