As of right now, players can send their friends the "Distinguished Dog" puzzle for free, while the others will unlock over time. You can also purchase them all right now for 160 Facebook Credits (or $16 US) if you'd rather not wait. Otherwise, the other Canine Collection puzzles will become available on October 1 and November 19, making this a fairly long-term feature for those that are interested in playing.
If you complete the full Canine Collection, you'l receive ten of each boost as a prize, along with a Best Buddy VIP Boost. Adding even more to this feature, Mahjongg Dimensions players can enter a photo contest, showing off pictures of their dogs that fit each puzzle's theme. In the case of the Distinguished Dog puzzle, for instance, pictures of dapper or classy dogs will be eligible to win large boost packages. For more information about the contest, make sure to check out the game's official Facebook fan page. Good luck!
What do you think of this dog-themed collection of puzzles in Mahjongg Dimensions? Sound off in the comments!