Nick Wood, CEO of Pets at Home, is resigning to spend time with family.
Following almost four years at Britain's largest pet supplies retailer, Wood will relocate to London with his family.
"I would like to thank my colleagues throughout the business for the support they have given me over my time as CEO," said Wood. "It has been a privilege to lead Pets at Home."
Prior to his role at the the FTSE 250 company, he served as Chief Executive of American Golf and formerly ten years with DSG International plc (now Dixons Retail).
Ian Kellett, who currently heads up Pets at Home's retail division, and has also held the role of finance director, will take over as company CEO from 4 April. Wood will remain at the retailer until 1 July in an advisory capacity to ensure a smooth transition.
"Pets at Home is a special business whose success is founded on its many thousands of talented colleagues who, together with our customers, share a love of pets," said Kellett.
“I look forward to leading our amazing team as the business enters the next exciting stage of its development."
"I would like to thank Mr Wood for steering the business so capably over the past four years, particularly in overseeing the Group's IPO in 2014," said Chairma Tony DeNunzio. "I wish him well as he takes a break from business life to spend time with his family."
The retailer offers veterinary care as well as pet products. Vet and grooming services have been booming lately, driving 7.1% revenue growth in the last three months of 2015 to £195.1m.