Maybe a bit late to chime in on the photoshop debate, but I am impressed by the sharp focus on all the dogs that subjectively makes them look pasted on. At first I thought it was one of the digital reconstruction techniques combining several shots of the same subject at different focal lengths. But the focus on the bamboo fence blurs as expected as the distance increases, while the dogs are all in sharp focus throughout.

..apart from the fact that a huge crowd of dogs like that would not all be sitting nicely looking at the camera.

They would be if the photographer held a certain meat item...

UbiquitousBubba
They would be if the photographer held a certain meat item...

Wouldn't the photographer himself be a certain meat item? 

jbow
My best dogs have come from the pound...

 
Not me.
 
Poor old Titus, he was a useless dog.
 

 
He'd get lost almost every time we took for a walk in the woods, and we'd invariably find him just sitting on the path about a mile away from where he blundered into the trees. If he even got scent of another dog, he'd spend the entire walk pulling on the lead and snarling. If he saw one, he'd do his best to try and kill it.
 
He also liked to try and emulate our lurcher, who could *almost* catch a crow on take off, and could run a hare down. He burst both cruciate ligaments doing that.
 
My daughter loved him though.