A 2-year-old boy was taken to Christchurch Hospital after being attacked by a pitbull on Friday.
A spate of dog attacks, including one over the weekend which left a 7-year-old boy needing more than 100 facial stitches, has reignited debate over dog control.
Christchurch City Council head of regulatory compliance Tracey Weston said the dog involved in the attack in Woolston was believed to have been a 2-year-old American pitbull terrier cross.
It has since been put down by a vet at the owner's request.
Ms Weston said an animal control officer visited the address of the dog owner, spoke to the owner as to what happened and what he wanted to do with the dog. He said he wanted the dog destroyed.