It's crazy ... but unfortunately, it's true.

Here's what happened ... trainer Angela Helen Turnwald and her dog, Zipping Sarah, secured first place at the Addington Raceway in Christchurch last November ... earning a $4,000 prize, according to the New Zealand Herald.

But, the money never made it to Turnwald's pockets ... after her winning doggo's post-race urine test was flagged for amphetamine and methamphetamine.

The Judicial Control Authority for Racing investigated ... and while it was unable to determine "a deliberate wrongdoing," an example had to be made for the rest of the sport ... and Turnwald was hit with a 4-month ban from competition.

JCA chairman Warwick Gendall QC spoke about the probe ... saying, "Methamphetamine is a potent central nervous system stimulant which poses significant animal welfare issues and the level of Amphetamine (as it metabolized from Methamphetamine) in the sample was particularly large."

Gendall added Turnwald -- who previously had a spotless record -- had several people vouch for her character ... but it was important to show there was a zero-tolerance policy when it comes to illegal performance-enhancing substances.

Turnwald's suspension starts April 30 ... and she will also have to pay $3,500 in fines.