The Corpus Callosum. You can go to Neuroscience for Kids to find answers like that.

*Actually, the Corpus Callosum is the structure, but the type of tract is commisural.

draw a population then draw where the animals are (one animal at each region) then draw the legend and tell how many animals are where the certain animal is and draw (i recommend this) the estimated amount of animals.

No, "most" animals DO NOT have a corpus callosum. The corpus callosum is found only in placental mammals, while it is absent in monotremes and marsupials as well as other vertebrates such as birds, reptiles, amphibians and fish. (Wikipedia)

There are a number of online resources one can use to learn how to draw a horse. Artists such as Walter Foster and Susan Jeffers have posted online lessons, and there are video lessons available on YouTube. General information websites like WikiHow and How To Draw Animals also have step by step guides available for how to draw a horse.

they would draw the animals they hunted.