Whitebridge Pet Brands, a St. Louis-based manufacturer of pet foods, treats and supplements, has merged with an Italian pet food brand that's a sibling under its new European owner.

Whitebridge, whose products include Tiki Pets brand cat and dog food, has completed a merger with Agras Pet Foods, the Genoa, Italy-based maker of Schesir brand pet food and treats for cats and dogs for the European market. The combined company will do business as Whitebridge Pet Brands, with Olivier Amice, Whitebridge's current CEO, as chief executive.