ninemsn- The girl, who appeared to be about four years old, was seen trying to free herself after the woman trapped her leash under the door of the Ladbrokes agency in West Sussex, England on Friday.
The woman remained attached to the girl from inside the shop after feeding the reins under the door.
Photos and video of the incident have sparked outrage in the UK, with the Daily Mail newspaperasking: "Is this the UK's worst parent?"
The child would not have been allowed inside the betting agency because she was under 18.
"I noticed the mother bending down to the bottom of the door with a cord out of the corner of my eye," he said.
"At first I thought the child was just caught, but then she went in and left her and I couldn't believe it.
"I wanted to see how long she would leave her and it was about two or three minutes."
In video of the incident, a person can be heard saying: "oh my God she's like a dog".
The woman remained attached to the girl from inside the shop after feeding the reins under the door.
Photos and video of the incident have sparked outrage in the UK, with the Daily Mail newspaperasking: "Is this the UK's worst parent?"
The child would not have been allowed inside the betting agency because she was under 18.
"I noticed the mother bending down to the bottom of the door with a cord out of the corner of my eye," he said.
"At first I thought the child was just caught, but then she went in and left her and I couldn't believe it.
"I wanted to see how long she would leave her and it was about two or three minutes."
In video of the incident, a person can be heard saying: "oh my God she's like a dog".
