Identify wellington and Mrs shears

Wellington is Mrs Shears' poodle. Wellington is found dead by Christopher at the very beginning of the novel, with a garden fork sticking out of him.

Mrs. Shears is a neighbor and friend of Ed's, she lives on the opposite side of the road, two houses to the left. She screams and screams when she sees Christopher with her dead dog. When she sees the dog spouting blood from the holes that have pierced it with the fork she doesn't pick it up.