It looks like a Philodendron. Does it have a running stem?

Yes, I think it's some sort of Philodendron vine. But it's leaves stay small, unlike a similar looking species I had years ago with larger leaves and red "hairy" stems.

I've got that one with the red hairy stems, P. pedatum. The problem with a lot of aroids is they're so variable it can be difficult to pick what's the same species or a different one. Plus juvenile leaves being different to mature ones in some cases. You can always try the International Aroid Society web site. They have a forum as well. A lot of botanists and taxonomists use that site.