MIAMI GARDENS, Fla. -

Authorities say two horses were each 200 pounds underweight when they were found boarded up in a stall at a South Florida ranch.

Jeanette Jordan of the South Florida Society for the Prevention of Cruelty to Animals says the horses were kept without food or water for months in an 8-by-10-foot stall at a boarding facility in Miami Gardens.

Jordan tells The Miami Herald that the horses survived by eating wood and their own manure. She says "it was almost like they were being nailed into a coffin to die."

Police began investigating at the facility after receiving a report about animals that appeared to be extremely thin. The horses found Sunday have been moved to a rescue ranch in south Miami-Dade County.