It is thought that the main reason for the cutbacks is a shortage of veterinary surgeons caused by Brexit, which is making it both harder and more expensive to recruit.
The company has given an undertaking that the joint venture partners of the practices it offers to buy back will not be expected to repay outstanding borrowings to any parties and Pets at Home will settle any liabilities for third party bank loans and leases on behalf of the JVP.
Chief Executive Peter Pritchard said: "Since becoming the Group CEO in May, I have had the opportunity to take stock of the wider group and shape my view of our future.
"What I have found fills me with confidence. Pets at Home is a healthy business and customers are loving what we do; responding to our price repositioning, investment in digital and the amazing service delivered by our vet partners. We have the ability to offer almost everything a pet owner needs, giving us opportunities our competitors simply don't have. Which is why my vision is to develop a complete pet care company, uniting our retail and vet businesses.
"Reviewing our Vet Group has been a priority. I recognise we have grown at pace and more recently, have seen the pressure that rising costs and our fees are placing on this young business. We will need to recalibrate the business to deliver more measured growth, whilst maintaining our plan to generate significant cash profits.
"We are focused on maximising our unique assets and delivering a plan for sustainable cashflow and profit growth. Given the success of the changes we have made in Retail, I'm confident we can do this."
Further investigation revealed that the products in question: AVA Mature Cat Chicken 2kg, AVA Mature Cat Chicken 4kg, AVA Senior Cat Chicken 2kg and AVA Adult Cat Neutered Indoor 1.5kg, all had insufficient levels of thiamine (vitamin B1), which caused the cats to exhibit symptoms of sudden collapse, fitting, widespread twitching and general unsteadiness.
Talking to the BBC, Pets at Home spokesperson Brian Hudspith said it was important to alert veterinary surgeons as well as customers because thiamine deficient cats would usually present with quite different symptoms, including stiff limbs and the head falling onto the sternum.
He said: "Rather than the more typical cervical ventroflexion (head falling onto the chest) associated with thiamine deficiency, in the three cases we saw the predominant clinical signs included sudden collapse, fitting, widespread twitching and general unsteadiness on their legs, which began suddenly after 4-6 weeks of being on the diet."
Pet owners who have bought the products are being advised by the company to dispose of the contents and return the packaging to any Pets at Home store for a full refund. Owners who think their cat is demonstrating any of the symptoms are being advised to seek immediate veterinary advice, and to contact the company's customer advisors on 0800 328 4204.
IMPORTANT UPDATEDavies Veterinary Specialists has published advice and support for veterinary professionals and pet owners concerning the diagnosis and treatment of thiamine deficiency in cats, here.
Pets at Home has announced the acquisition of the joint venture practice business, Vets4Pets, adding 93 stand-alone veterinary practices to the 116 in-store practices it already operates under the Companion Care brand.
Providing veterinary and grooming services to consumers is seen as the way for the retailer to overcome competition from the Internet.
Nick Wood, CEO of Pets at Home said: "The expansion of our veterinary business is a key element of our growth strategy for Pets at Home, providing additional services to our customers within our stores or close to our customers' homes. The acquisition of Vets4Pets is an important step in the delivery of this strategy. Vets4Pets is highly complementary to Companion Care, sharing fundamental beliefs and values, and is an excellent strategic fit for Pets at Home. I am delighted that Peter Watson has agreed to stay with the business. His knowledge and experience will be invaluable as we continue to build our veterinary business with both stand-alone and in-store practices. He will work closely with Jane Balmain, the Managing Director of our Companion Care business as we integrate the two businesses."
Peter Watson, Founder and CEO of Vets4Pets said: "Pets at Home holds a unique place in the retail landscape, built on a strong identity and a real passion for people and pets. It is clear to me that Nick and his team have a similar vision for their veterinary business. I'm delighted to be working with Nick to continue to expand the veterinary business by offering attractive joint venture opportunities for vets in stand alone locations to complement the offering in Pets at Home stores."
Companion Care MD, Jane Balmain added: "Companion Care and Vets4Pets each enjoy a strong reputation among both vets and customers. Both businesses have a common business model, offering joint venture partnerships with vets. I am looking forward to working alongside Peter as we bring the businesses together, continue to expand our joint venture partnerships and accelerate our growth."
Vets4Pets' UK operational centre will remain in the East Midlands, with its support functions being split between Companion Care's operation in Oxfordshire and Vets4Pets' Guernsey office.