Years ago when dog ramps first came out they were fairly steep and my 100# Labrador had much difficulty going up it.  Fast forward 10 plus years......now there are a ton of options out there!  We have two Labradors....one is 80# and the English Labrador is 90#.  Within minutes they were using the ramp without any hesitation or issues.  We have a Dodge Durango, and the incline is at a perfect grade for them to feel safe going up and down.  The ramp is light weight and stores easily in the car as well.  We are THRILLED that we picked this particular ramp over the other ones listed.  BUY IT NOW!!