Heffy the Collie x Meet the perfect all rounder. Heffy is five years old. Loves, dogs, children, and is fully housetrained. What a family pet. She is smaller in size than your average collie. Breed: Collie Cross Age: 4-7 YearsSize: MediumGender: FemaleGood with Cats: Unknown Housetrained: Yes Heffy has gone to her forever home!