Yes!! Spring and fall are the heavy shedding seasons. Also diet makes a difference in how much dogs shed. I usually brush a couple of times per week during shedding season (always outside)....and regular times about once a week is enough.
That's called a shedding blade (I think?). I like an undercoat rake the best, and a slicker brush for quick brush outs.We use what looks like a saw blade, and it works great. Boys really enjoy it.