Are dogs left- or right-handed?

The vast majority of people use one hand or the other for most things – and for nearly 90% of the human population this is the right hand. Some 10% to 13% of humans are left-handed, with men being three times more likely to be left-handed than women, though very few people are ambidextrous.
Until relatively recently, it was assumed that “handedness” was unique to humans, but studies of animals suggest that “handedness” may be a fundamental feature of all mammals. What is less clear is how this is displayed in animals and whether this is the same as human handedness.
Are dogs left- or right-handed? What the science says