"It's really, really rewarding to do this. Most of our dogs go to family homes and it's quite amazing for a rescue dog to be doing something so good that helps everybody."
New Zealand Detector Dogs managing director Janet Williams said Buddy was well ahead of where she thought he would be so early in his training.
"He is really meeting the grade - and in most cases he is exceeding what a dog would normally do at this stage. He is now confident at sniffing out most of the targets and planting his little bum down and not moving until he gets rewarded. He has also learned that the longer you stay and show interest in the box, the more biscuits you get."
She said last week he made a big breakthrough, learning that if he takes her back to a box with cannabis in it he also gets biscuits.
"The great thing is that when the dogs have the wit and confidence to take their handler back to a box, the next step is that they then start taking them forward to one with cannabis - which is where the real training starts. Sometimes dogs don't get this until they have done at least 20-25 days of training and some even longer. He certainly is a sharp little dude and grows in confidence each day," Ms Williams said.
"While it is early days yet he is well and truly on his way to becoming a good little drug dog and nothing seems to bother him much."