What does 狗吃连帮 mean?
I guess it's origin is 勾持连帮，maybe it's a local phrase that only be used in a small  district.
勾持 may means 勾搭，and be sounded to 狗, 连帮 means to be a group, that's why it's means 勾结起来做坏事. 
Realy never heard of this word.