Animal welfare groups fear dogs that have gone missing in Tauranga are being stolen for "dog baiting" in illegal underground dog fighting rings.
The warning comes amid a spate of lost dogs reported in Gate Pa and posts on Facebook cautioning owners to be vigilant and on the lookout for dog thieves.
Figures from Tauranga SPCA show six dogs were reported lost in Gate Pa in 2014 compared to 12 this year while it reported 166 incidences of lost dogs for all of Tauranga in 2014 compared to 133 in 2015.
Animal welfare inspector Anna Porteous said it was not a high number and "that would make us think there are dogs being targeted and stolen for the purpose of dog baiting".
Puppy Love Dog training owner Chelles McIntosh had put up a post on Facebook alerting watchers to be observant and keep an eye on their dogs.