Had the vet visit this morning, for a sick gimmer. She’s lost a lot of weight and her back legs are rigid. She’s lively enough and mobile, but not on great nick.
Vet checked her over, suspects a spinal abscess or nerve damage, but trying a course of antibiotics and anti-inflammatory, in case it works.
Not looking great though!
Air an Lot 
Sheep seem to have a lot of illnesses.