What kind of cherry tree is this?

[biwa]

I found 2 saplings growing in my yard. I think they're cherry trees but they look different that the two decorative cherry trees growing nearby. These trees have short, smooth leaves and the decorative trees have longer leaves with serrated edges and a lot of texture from the veins. These saplings look more like my friends' fruiting sour cherry tree to me. There are caterpillar bites taken out of the leaves, so it might be a wild cherry tree too. What do you guys think?

[url=https://azuki.fileave.com/cherry%20tree%201.jpg][img]https://azuki.fileave.com/cherry%20tree%201_t.jpg[/img][/url][url=https://azuki.fileave.com/cherry%20tree%202.jpg][img]https://azuki.fileave.com/cherry%20tree%202_t.jpg[/img][/url]

[wingdesigner]

Ehhh, don't know about that veining... If you don't get an answer here, try reposting in the trees/shrubs section. I thought cherries all had smooth edges to their leaves, but I can't remember what a wild cherry looks like, sorry.