Why I love my protective dog

As I mentioned I like going home partially because it allows me to see my family's dog which is a border collie named Doogle. Anyway, when I get home Doogle typically jumps up and down like crazy and then promptly  either stands or sits down in front of me and doesn't move. It's kind of sweet like he's trying to protect me, although from what I don't know. Maybe it's just that he is a sheepdog and it's a natural instinct but I like it. To me it shows how dogs care about people even though they're not even the same species. I think it shows how love or at least affection can transcend everything. Plus, I just plain love dogs!