Mastodons and mammoths are both extinct mammals of the Proboscidea order. They have many similarities, including their large size and tusks, but there are a few key differences between them. Mastodons had shorter legs than mammoths, and their teeth were more suited for grinding foliage than the mammoths’ teeth, which were designed for grazing. Additionally, mastodons had a lower-crowned, more dome-shaped skull compared to the higher-crowned, flatter skull of the mammoth. Lastly, mastodons had more ridged and bumpy tusks, while mammoths had smoother tusks.