The RSPCA is asking for help after an underweight horse said to be resembling a "walking skeleton" was rescued from a field.

Police were called to the pen on Beechenlea Lane, near Swanley, after concern was raised about the collapsed mare’s wellbeing.

RSPCA inspector Andrew Kirby, who is investigating the incident, said: “She is a very sweet mare, around 15 hands high and thought to be around nine years old.

"This poor mare had been reported being down and unable to get up and suffering from severe diarrhoea . When we attended, although she was then standing, it was clear she was very sick and in need of urgent medical treatment.

She was seized by the police and placed into the care of the RSPCA and we are doing all we can to save her, but sadly she is exceptionally weak."

After police officers removed the animal, she was taken to a private boarding facility where she is receiving urgent medical treatment for, among other things, a heavy worm burden. Scans are also being taken to verify the animal officer's belief that she may be pregnant.

Inspector Kirkby said: “I have carried out investigations in the area and have been told that she had been dumped in the field with other horses, and therefore I would appeal to anyone who may have any information regarding who might own this poor mare.

“The condition she is in is not acceptable, she is so skinny, she is like a walking skeleton you can clearly see her ribs, spine and hip bones.

"The fact she could also be pregnant and left in such a state is horrifying."

Nationally nearly 1,000 horses were rescued by the RSPCA from suffering and neglect in 2017, with Kent having the highest number of equine recoveries last year at 71.

Anyone with information is urged to contact inspector Kirkby the confidential RSPCA inspector appeal line on 0300 123 8018.