Two equine rescue organisations, the RSPCA and the ILPH, are investigating the case of 12 horses removed from the Sussex stud of miniature horse breeder and producer, Patricia “Tikki” Adorian.

The Mail on Sunday reported that it has been given access to photographs and video footage, which show toy horses with “hooves so overgrown they were unable to walk comfortably”.

The newspaper alleges that the video footage also shows thecarcass of a dead toy horse lying in a pile of rubbish.

It reports that other horses had chronic coat mange, some were bloated and others had their coats hanging from them in dishevelled clumps.

The RSPCA and the ILPH told Horse & Hound Online that they were unable to confirm the conditions of the horses, but said that the case “was being investigated”.

Tikki Adorian is reported to have resigned as president of the British Miniature Horse Society when the case came to light.

Shewon a place in the Guinness Book of Records in 1996 when she produced the smallest horse in the world, measuring 27″.