Physics Major? Advice/Info?

I'm currently at guelph for Wild Life Biology but I'm exploring different majors. I'm thinking of changing my major to physics since I really love physics, and I'm curious as to how the phys programs are. How are the professors? I know the workload will be heavy but I'll be able to handle that.

I've checked out the course calendars, and it seems that there aren't many bachelor programs offered with respect to physics. I'm looking into astrophysics/astronomy but it isn't offered as a major at Guelph. Anyone know of any schools in Ontario with decent physics programs?

Thanks