Several pet foods, including major brands Whiskas, Dreamies and Pedigree, have all disappeared from Tesco’s shelves.
It is a dispute over prices with Mars suppliers ending the supply of six brands to the national supermarket.
Other items including IAMS, Sheba and Crave should all be missing from the store.
Over the past few weeks, shoppers said they’ve noticed prices rising across the board, with one person saying: “12-pack Whiskas went from £3.29 to £4.50. 36% inflation.”
Discussing the dispute, a Mars spokesperson said: “We are aware that some of our Petcare products are currently out of stock in Tesco stores.
“We want to reassure pet owners that their favorite products are available and remain widely available on the UK market.
“There are many reasons why our products may be out of stock in some stores from time to time.
“We cannot comment on individual business relationships or situations.”
While a Tesco spokesman said: “With household budgets under increasing pressure, we now have more responsibility than ever to ensure customers get the best possible value, and we will not be passing on price increases unjustifiable on our customers.
“We’re sorry this means some products are not available at the moment, but we have plenty of alternatives to choose from and hope this issue will be resolved soon.”
The news comes just days after customers noticed Heinz products were missing, which Tesco shared due to another pricing disagreement.