I was in #Toronto last week for a conference; I always take at least some of my gear for off-hours exploring. Met some grey squirrels. This new mama was looking a bit rough (unsurprising, as anyone with newborns will tell you)--I learned from a squirrel aficionado that mama squirrels will pull out their fur to make a nest for their babies, since they often nest in cold spaces. Gives new meaning to parents who say their kids make them want to pull their hair out!