Healthy snack Bear has launched a series of in-pack collectible cards.

Rolling out now in the Yo Yos baked fruit roll packs, the fact and puzzle cards cover 10 categories including dinosaurs, animals, space, underwater and bugs.

They would encourage children to “explore a bit and be interested in the world around them”, said head of marketing Emma Hines.

Collectors can claim items such as a collector’s box and fact booklets through on-pack codes.

Retailers stocking the brand, named Best Sweet Snack at The Grocer 2010 Food & Drink Awards, include Waitrose, The Co-op Group, Ocado, Whole Foods Market and Planet Organic.