The pups which would be bought will be in the age group of two to six months and it would take at least an year to train them, a senior police official said.

The increase in the number would ease the pressure on the existing "overworked" squad which has attended to 12,429 calls last year, which included 709 tracking calls and 11,009 explosives calls besides performing anti-sabotage checks during several VVIP functions and visits.

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The move to strengthen the squad comes in the backdrop of the 2010 Games, increased workload due to addition of new police districts and terrorist threat perception.

"There is a lot of pressure on the squad. We have just 47 canines in the squad now and some of them will retire soon. We need more canines in the squad to meet the challenges. So we are buying more," the official said, adding "before the Games, we plan to have 104 dogs in the squad."

The Delhi Police has already floated a tender for buying 75 pups from those firms registered with the National Kennel Club. The force prefers male pups of German Shepherd, Labrador and Doberman breed, the official said.

The specifications laid by Delhi Police says that the offered pups should have well developed and proportionate body, with well developed bone, strong back, shining coat, deep chest and muscular feet with well cushioned foot pad.

All limbs of the offered pups should be sturdy, well formed and graceful, the official said adding that it should have no running nose and eyes.

Pups of successful bidders shall be kept under observation of the department for a period of at least one month so that potentialities can be assessed, after confirmed supply order, the official said.