When Kim Watts found out her pet insurance company had cancelled her policy, leaving her with £8,000 to pay in treatment costs, she says she burst into tears.

Her beloved dog Darcey was left with a crushed disc after a "savage" attack by two other dogs while on a walk.

Watts says she checked that Darcey was covered for the treatment, with the insurer confirming "on speaker phone in front of the vet" that she would be.

However, nine weeks later, while looking at the pending claims on her online account, Watts discovered the policy had been terminated. She had to pay for the treatment using her own savings.

Her insurers said she wasn't covered because Darcey was being used as a working dog. Kim said dog agility was her hobby and she's never been paid for it.

On appeal the Ombudsman ruled in her favour.

"I feel badly treated," she says. "I wasn't even given an email to read. I looked at a screen and saw 'policy cancelled'. It's just unbelievable.

"I think they were trying to get away with it. They just thought, 'you're a customer and you won't fight us'. I honestly didn't think they thought I'd fight them."

Frustrated with the firm's refusal to pay out, she took her case to the Financial Ombudsman Service (FOS) - which can order insurers to pay compensation.

Watts lost her initial claim but won on appeal and got the £8,000 back in full. However, she says she still had to pay £900 for specialist legal advice.

Her insurer, Purely Pets, says it had implemented the ombudsman's recommendations in full and reinstated the policies for Darcey, her border collie.

About 17.2 million UK households own a pet, and over the last two years BBC News has reported in detail about the rising cost of vet care, hearing from some who have even taken their pets abroad to save on rising fees.

We've also spoken to vets and animal charities worried that more pet owners are turning to euthanasia for their animals as bills rise well above inflation.

And after each story, thousands of people have got in touch with BBC Your Voice, with concerns about insurance regularly raised.

Complaints include general rising costs, renewals going up after claims are made, premiums rising as pets get older and owners not getting the cover they expected.

It comes as figures show more people are taking claims to the FOS, unhappy that insurers are not paying out - and at a time when premiums have risen.

New statistics from the price comparison website MoneySuperMarket show that average pet insurance sales premiums rose by 15% from 2022/23 to 2024/25 before falling slightly in recent months.

Ian Day, from Sheffield, contacted Your Voice after he cancelled his insurance policy for his 12-year-old dog Alfie.

Last year, he filed a claim for the cost of removing a growth from Alfie's nose but it was refused because it was more than 12 months after the problem was first spotted. Day says he was "completely knocked sideways" by this policy condition, and soon realised he would have to foot the £1,200 bill himself.

"Looking back, it was a very basic package that didn't cover much at all," he says.

He now puts around £25 a month – roughly the cost of his previous policy - into a separate bank account, which he plans to put towards the cost of any future vet bills.

"Even if I've not got the full amount, at least I've got something towards whatever that amount could be," he says.

Insurance expert Kara Gammell, from MoneySuperMarket, says reviewing policies regularly is important and urges consumers to look at how claims can affect future costs to make informed decisions.

Jackie Fawcett and Stephen Neild, from Manchester, also cancelled their policy in favour of putting money aside each month.

They say their annual quote jumped after their 14-year-old cockapoo, Tilly, underwent tests and treatment following a tooth removal.

"There were no surgical procedures or anything like that," says Neild, who called the price hike "exploitation". The couple now has what they call a "rainy day fund" for any future treatment for Tilly.

Tesco Pet Insurance, who provided the cover, says "the cost of claims is one of a number of factors that can affect the price of a policy at renewal" and also noted Tilly's age had been reflected in the quote. It says the couple had a more comprehensive policy, which typically costs more than basic levels of cover, and that alternative options were presented to Fawcett and Neild.

A record-breaking 4.6 million pet owners took out insurance in 2024, when payouts by members of the Association of British Insurers topped £1bn for the third consecutive year.

While the amount being paid out is going up, the consumer group Which is concerned about what it calls "shady stuff going on in the industry".

"Companies aren't being clear enough with consumers about what the product is that they're buying, about what it covers," says Lisa Webb, a lawyer for Which?.

"Insurance companies love to use long documents, policies with wording that doesn't make any sense, that get you bogged down, so by the time you start reading it, you feel like you can't finish."

She says more and more people are looking to self-insure their pets, but warned it requires "quite a lot of discipline" and that it is not the norm.

Other consumer advice bodies warn self-insuring options can also be risky, as savings may still not cover a big bill. They point out most insurance policies also include public liability insurance, in case a pet causes an accident or gets into a fight.

In 2020-21, the ombudsman says it received 1,440 new complaints about pet insurance. That number rose by 59% in 2024-25 to 2,286 - 42% of complaints dealt with during that time were upheld.

Which says the rise coincides with greater scrutiny of the industry after a recent investigation into vet prices by the Competition and Markets Authority found prices have risen at nearly twice the rate of inflation.

It's not just dog and cat owners with issues. Julian Gold says he's struggled to insure his guinea pigs because the small mammals are classed as exotic pets and therefore have higher premiums.

His three-year-old guinea pig, Remington, had surgery for a bladder stone. The total bill for the animal's treatment came to more than £3,000 - but his pet still died the day after.

He says he wishes he had insurance to cover Remington's treatment, but he did not take out a policy because "it's hard to get a sensible quote".

"If it's £20 a month and you have five guinea pigs who live five years, then that's £6,000 you'll be paying in insurance over that five years."

He thinks there should be "a group insurance policy" available for small animals like his.

The ABI, which represents insurers, says record pet insurance payouts have been "driven largely by the rising cost of veterinary care" and reiterated the importance of choosing the right cover.

"With some treatments costing thousands of pounds, the right insurance can offer real peace of mind during what can already be a stressful time for owners," it added.

The FOS says customers often feel claims "have been unfairly rejected" and reiterated the importance of insurers making policy terms transparent. It urges pet owners unhappy with their insurers to raise an official complaint and, if there is still no resolution, to contact the ombudsman.