When my dog begs for a treat, she rubs my leg. She dances around. She acts really happy.
It's calling "fawning".
FAWN:
Use fawning to describe someone who's over the top in the flattery department. Like a fawning admirer who just won't stop complimenting your looks, showering you with gifts and otherwise kissing the ground you walk on.
From the Old English fægnian, meaning “rejoice, exult, be glad,” fawning can be both an adjective and a noun form of the verb fawn. Fawning people are often trying to win favor with the person being flattered, and it sometimes comes off as sucking up. So do everyone a favor and don't try to boost your poor grades by fawning over your professor’s every word.
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Trump touching L'l Kim's arms, grabbing his hand, touching his side and his back again and again.
It showed how Trump is desperate for a diplomatic win. It made him look pathetic, sucking up to a worse murderer than Putin.
Kim will never give up his nuclear weapons.