The stallion's ear had also been slashed off in the disturbing attack.
The RSPCA is hunting a thug who hacked off a horse’s genitals and left it to die in a sickening attack.
Tonto, a grey stallion, was found dead in a field in Grantham, Lincolnshire by his devastated owner on Friday.
His genitals had been cut off as well as one of his ears, according to the RSPCA.
WARNING – Graphic images that some might find distressing below.
The organisation has launched an investigation into the incident.
A spokesperson from the organisation said: ‘This is a truly appalling incident which took place in an isolated spot off Whinbush Drive in Grantham.
‘When the owner last saw Tonto on December 20, he was happy and healthy.’
‘Sadly when he returned at around 1pm on Friday December 22, Tonto had been mutilated and killed.
‘We know from speaking to the owner that he was extremely friendly and would follow people around the field.
‘This was a sickening attack against a defenceless animal and I would urge anyone with information about what happened to get in contact using our appeal line on 0300 123 8018, quoting reference number 1200288.
‘We are also warning horse owners in the area to be extra vigilant, given the nasty nature of this crime.’
Earlier this year a horse in Cambridgeshire had to undergo a gruelling three-hour, £6,000 operation after suffering a horrific attack with a pair of scissors.
Four-year-old Duke was left with blood pouring from his left eye after being slashed by an unknown assailant.
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