Upright stance, huge bright pink three row pea comb, and patchy gray (usually male) coloring.
There is a huge 600+ page thread about telling EEs gender due to coloration, comb, etc. Here is the link, its got a lot of great info...
My parents rooster is people aggressive but he has never attacked the dogs, they have a 50lb dalmation and a 15lb maltese. They've had this rooster for 5 years now.
I politely suggest the very opposite if you are going to keep a roo. Do NOT make him a pet or feed him out of your hand, I suggest taking a very hands off approach starting immediately if you plan on keeping him or finding a home for him that doesn't mean an immediate stew pot.
EVERY SINGLE...