it is used in the game warcraft III defense of the ancients(DotA),which means very inexperienced or seriously a noob(newbie). it is derived from godlike,which is the status a player gets when he/she kills 9 heroes in a row without dying,which needs high skills from the player. doglike just means the contrary.
player 1: damn player 2,u got pawned 9 times.. u r DOGLIKE!!