You can make them too--all you need is a dinosaur sandwich cutter. I recommend the DynoBytes from the Dollar Tree. This is what you're looking for on Amazon, but I see them at the dollar store frequently, so go there!
On this plate, I made ham and cheese sandwiches on white-wheat, cutting them out with a DynoByte cutter, and adding two sugar eyes to make them look cuter. The tree trunk is a granola bar (I had Nature's Valley Oat & Honey ones handy) and the tree leaves are peeled Cutie orange sections. I realized after that we could have made a really cute hill out of a banana half, but the kids ate the last bananas at breakfast.