How to translate "舔狗" to English? This is a popular word in China. I know 舔 means lick, 狗 means dog. But it seems that the meaning of 舔狗 is not to do with lick, there is a sentence says 舔狗不得好死, so I think it's a noun. And according another sentence 舔狗舔到最后一无所有, I think it can not be translated as licking dog. So how to translate it?
Baidu Baike defines 舔狗 as:


  “舔狗”，作为网络语的该词，其含义是指代那些无脑去奉承他人的人。通常有两种用法，一种是形容在感情生活中明知道对方不喜欢自己，还一再无底线的讨好对方。另外一种是形容毫无原则去阿谀奉承的人。


As for a translation words like:


kiss-ass
brown-noser


should work.