New owner Anita Elcome said: “The tail helps keep the flies away and not having one can also have a psychological impact.
“They swish their tails when they are angry or flick them when they are happy and not having one really does affect them.
“I think Happy will really enjoy having a tail back.”
The tail, made of horse hair, normally costs around £70 but has been donated to Happy for free by Stockport-based company Horse Hair Extensions.
She added: “I saw his story on the website and just really liked the look of him.
“The fact that Happy didn’t have a tail didn’t put me off at all.
Happy's new horsetail will soon be woven into his remaining hair. The accompanying photo shows where not to stand around a horse. Link -via Fark