nuzzle

(verb) move or arrange oneself in a comfortable and cozy position. Synonyms: cuddle, snuggle, nestle, nest, draw close. Examples: "We cuddled against each other to keep warm." "The children snuggled into their sleeping bags."

(verb) rub noses. Synonyms: nose.

(verb) dig out with the snout. Example: "The pig nuzzled the truffle."