A person or group of people who try hard to claim other peoples success. Such a person(s) are often described as opportunist, fake, plastic, and untrustworthy. Like a tiger they will often go to great lengths of hunting down their next prey. Hungry Tiger(s) have an inflated sense of self-worth regardless of their lack of originality. None of their success come from genuine hard work but rather through the strategic leaching/profiting off of other peoples successes or downfalls.
That girl over there with the purple dress is insecure and desperate for friends. When ever she is alone with my friends she tells them mean things about me in an attempt to turn then against me. Cheryl is a hungry tiger because she uses my relationships to get herself further.