Second pic of the whole thing. (Is there a way to upload more than one pic in the original post?)

We have kept it at this size since 1974. That is how it was when the builder planted it at our house.

Most of the shrub dogwoods you would see in Quebec will be natives. Successful, yes...invasive, no. Even if your dogwood is one of the European species, they are so similar to the North American species that some consider them varieties rather than distinct species. They also don't appear to have a competitive advantage over the native dogwood species so, not invasive there either.

Thanks for the replies. Embothrium, I should have said it looks like a Viburnum to me, but I don't know anything. Ken, I didn't see any thorns, but I will get a closer look at lunch. I was worried about the heavy dew and poison ivy everywhere and wasn't getting too close. I have seen wild rose bushes, but have never seen them flower. Wasn't expecting the flowers to look like that.