The maker of M&M’s chocolates and Juicy Fruit gum is poised to dominate the fast-growing pet-care business with its $7.7 billion purchase of veterinary and dog day-care company VCA Inc.

While it is still most likely to be associated with candy such as Snickers and Skittles, Mars pet-care division would contribute more than half of its total sales following the latest acquisition—topping sales of its chocolate, gum and other confections. The company said it sees opportunity for sales growth and high profit margins in light of the humanization of pets.