A few months ago I added a new lens to my kit bag. I would say 90% of the time the lens on my camera is my 70-200 2.8; I love it for being able to stand back and let the dogs do their thing, it also is beautiful for portraits. I made the decision to add a 35mm 1.4 for a couple of reasons; it's a beautiful lens for storytelling - especially indoors. It also means that I can get closer to dogs for a more intimate feel.
For action shots, I am so used to being able to sit back and let the bigger lens bring the dogs closer to me, it's been a bit of a learning curve holding off firing the shutter until they are almost on on top of me, sometimes literally!
I think it's a great little addition & I'm looking forward to bringing a different element to client shoots.