pester

(pesters, pestering, pestered)
If you say that someone is pestering you, you mean that they keep asking you to do something, or keep talking to you, and you find this annoying.
I thought she’d stop pestering me, but it only seemed to make her worse... 
I know he gets fed up with people pestering him for money. ..
that creep who’s been pestering you to go out with him. 

[disapproval]

mangy

(mangier, mangiest)
A mangy animal looks dirty, uncared for or ill.
 ...mangy old dogs.