shetland pony has been battered to death with a breeze block in the middle of the night in a brutal attack .
the left side of taffee 's skull was completely caved in , her left eye was battered outs of its socket and concrete was embedded in her brain .
the five-year-old animal also had a broken leg and vets called to the field in boxley , near gillingham , kent , had no option but to put the distressed pony down .