Your sentence is almost perfect! Here's a corrected version with very small changes to make it clearer and grammatically correct:
Corrected sentence: Dromedary camels have one hump and live in Africa. Camels with two humps are called Bactrian camels.
Actually, your original sentence was exactly the same, so it's already correct! Great job!
Explanation: Each sentence is clear, the words are in the right order, and the punctuation is good. So, no changes are needed.