We understand that the SPCA hasn't the money to seize every suffering dog reported to it (though it is spending thousands of dollars on lawyers to muzzle many people who criticize it). At one time there was a valid argument that Crown prosecutors' reluctance to prosecute for anything but the most egregious suffering limited the SPCA's ability to seize yard dogs (dogs kept on tethers, in pens, on decks, under porches, and in garages, etc), but that argument lost validity when the SPCA seized dogs like these shown below and Crown successfully prosecuted these owners.

It stands to reason that if the SPCA can seize many healthy, highly desirable, pure-bred little dogs living in a home where the Five Freedoms are all met, that it can seize a single large yard dog mutt that is being kept in a garage or on a tether or chain.

This photo was taken by the SPCA at the time it seized the dogs...