Camels
can be found wandering out in the desert
I've seen them on the way to Mesaaied and on the way to Dhukan and Zikreet

In Doha you can go to the goat and camel market which is right by the wholesale market. You can buy a camel there if you are so inclined.

Sealine Beach Resort has camels you can ride.

The camel race track has tons of camels. See them in action as you follow their race in your car.