Handlers and dogs must complete rigorous training, which includes time spent bonding and then passing annual assessments to ensure they are qualified.
One of the training exercises sees the dogs taught how to lock its jaw onto a padded sleeve to replicate a real-life scenario.
The animals are also trained to come away when told and to leave anyone who surrenders.
Dogs and handlers considered to be experienced enough can also be trained to search buildings for suspects thought to be in the possession of firearms.
Supt Walker added: “Recent successes have included our dogs locating a firearm concealed in a bush in Oldham.
“These types of jobs happen each and every day across Greater Manchester as the Dog Unit supports the force 24 hours a day, every day.
“That is why all our dogs and handlers are trained to the highest standards.”
Arrests have reached 43 a month, up a third on 2024’s average of one a day, or 374 across the year, GMP said.