Tori and Mangu have both developed infections in their tendon sheaths and are requiring very expensive medical treatment.
Nearly 150 supporters have so far pitched in to help two Kaimanawa wild horses saved in the last two musters, who were both facing life threatening injuries.
In the past seven days more than $11,000 has been raised to help with vet bills, but sadly the youngest of the pair, Mangu, a yearling, had to be put down as his pain was just too much.
The older Kaimanawa, Tori, which was saved from the 2021 muster and cull, has made it through surgery and is continuing to recover.
Kaimanawa Krazy, a non-profit private venture helping to save the wild horses, asked for help to fund life-saving treatment and vet bills for Tori and Mangu after both horses developed infections in their tendon sheaths and needed expensive medical treatment.
Tracey Thompson and her daughter Tanesha Thompson have been rescuing Kaimanawa horses from culls since 2012, training and rehoming them through their non-profit rescue on their farm between Takapau and Norsewood in 2014.
Tori was given painkillers and improved to the point of not being lame. But his leg swelled up the next day, so the vet was called on Tuesday last week, and was scheduled to come back the following Wednesday to scan the tendon just to be sure.
On that Wednesday, Mangu was on three legs in his paddock and brought home in the horse float as he could not walk.
"The vet was called immediately and came and gave him painkillers, and he was seen again later that day by the vet coming to scan Tori," Tracey said.
Between the two horses, the vet visited every day for the next 10 days before the decision was made to send Mangu to Massey Equine Vets on July 7.
Tori looked to be improving, so he stayed home.
However, the following Sunday, his leg started slightly swelling and he was going lame again.
By Monday, the horse was getting worse; it was decided he would be taken to Massey as well.
Tori went into surgery on Tuesday for a tenoscopy, which is the same surgery Mangu had on July 11.
Tracey explained, "for one horse to get a tendon infection without any injury is very uncommon; for two horses within days to get it is unheard of".
"We don't have the answer as to why this has happened."
Both cases may have been caused by old infections in their body turning up in their tendon sheaths.
The outcome for Mangu hung in the balance until the next day when the horse had to be put down as "his pain was too great and it seemed his infection wasn't going to give up".
"He has only been out of the wild for two months but had already won us over as such a sweet-natured young horse, I so wish I could have saved him," Tracey said.
"It is heartbreaking."
Tori went into surgery the day after Mangu, and Tracey was told he only has a 50 per cent chance of recovering.
She said the older horse was doing okay after his surgery with his pain levels under control.
So far Tracey has heard that Tori has been doing great and the vets took his pain meds down to once a day and he was coping well.
The horse has been walking well and not being grumpy at those handling him.