NUZZLE

[verb] - to touch, rub or press gently and/or affectionately, esp. with the head or nose, usually with small repeated movementsWhen I'm feeling depressed my dog comes and nuzzles my foot to try and cheer me up. [T]The kittens like to nuzzle up against/up to their mother. [I usually + adverb or preposition]When six o'clock came, she nuzzled closer (= pressed herself more closely against the other person) and said "Don't go just yet." [I usually + adverb or preposition]