The present invention relates to a dietary regime comprising a first stage pet foodstuff and a second stage pet foodstuff, wherein the first stage pet foodstuff comprises a ratio of protein:fat of 1:0.67 to 1:0.80 on a gram:gram or a dry matter basis and the second stage pet foodstuff comprises a ratio of protein:fat of 1:0.77 to 1:1.1 on a gram:gram or a dry matter basis for feeding a companion animal, wherein the first stage pet foodstuff is for feeding to a companion animal aged less than 6 months and the second stage pet. The present invention also relates to the use of the foodstuffs in combination to provide health benefits to the companion animal. The present invention also relates to the method of feeding the pet foodstuffs described and/or dietary regimes described to optimise the growth and development of the companion animal and kits comprising the first stage and second stage pet foodstuffs described herein.
