Surprised chickens didn't attack dog or vice versa

[Twoleggedmotherhen]

I was working in the run(getting chick run in the big run) had a cord coming through the gate. Closed the gate as far as it would go with the cord being there. Was working looked up and here was our Chihuahua (big boy 12 pounds) inside the run looking around. He had pawed the gate open enough to get in. I was really surprised that the chickens didn't attack him (3 in the past have had a dog attack them, before I took them in). Or Scrappy attacking them. But they all walked around like he was part of the flock. Scrappy and the hens are all about the same size. He was respectful to them. I got him out of the run as quickly as I could, removed the cord and locked the gate on the inside so I could finish up. He tried to open the gate but couldn't so he sat there whimpering.
Guess he is a chicken lover too

 

[ChickNanny13]

My Chi/Terrier (10#) loves being around my chicks until they're bigger than her. Now she refuses to enter the Chicken House Just careful when they are together, chickens love to peck at the eyes & dogs do like a chase My Chi/Teri loves to chase the wild birds that come into the yard.

 

[Twoleggedmotherhen]

My Chi/Terrier (10#) loves being around my chicks until they're bigger than her. Now she refuses to enter the Chicken House.

that's funny she won't go in now they are bigger than her. Scrappy has always been interested in them watches them. Once Penny (passed way) charged the fence at him and he peed on her. She never did that again He has a fit if anyone but hubby & I or any animal (dogs, cats)get near the chickens. He is loving these 6 chicks in the house. Of course he has always known birds (have a 19 year old African Grey Parrot, and a 18 year old Cockatiel). He turned 5 yesterday. He thinks he is a guard dog.
The other 2 Chihuahuas(Nicco is 13 weighs 4.5 pounds, Missy is will be 6 in August weighs 4 pounds) have no interest in them. Scrappy protects them too.

 

[Twoleggedmotherhen]

My Chi/Terrier (10#) loves being around my chicks until they're bigger than her. Now she refuses to enter the Chicken House Just careful when they are together, chickens love to peck at the eyes & dogs do like a chase My Chi/Teri loves to chase the wild birds that come into the yard.

Oh that won't happen again. Told him no more going into the run. If I ever have to take a cord inside the run again, he will be put inside. He doesn't chase any birds, he just watches them. But oh does he have a fit with squirrels.