“keep” means to have on your Lot or on the Common Property, so KWP’s right about the Owners Corporation (O/C) being able to deny you permission for your dog, even on a casual basis.
Again, and depending upon the wording of your Plan’s ridiculously prescriptive By-Law such as where you may need to advise the O/C of the dog being “kept”, surely nobody’s going to quibble over 100mm even if they could measure your dog’s legs!