I see this behavior in my dogs probably the most, where it wants to flaunt something it has, like a toy, in order to try and make me jealous. It's not just the ask for attention, but the behavior to try and incite an emotional response.
Learn English – word for evoking jealousy or wanting to
is-it-a-wordsingle-word-requests
Best Answer
show-off [shoh-awf, -of] noun http://www.dictionary.com/browse/show--off?s=t
note "pretentious" can mean "making an exaggerated outward show; ostentatious" and something "ostentatious" is "in order to impress others" or "intended to attract notice"
also exhibitionist