Um... no. Absolutely not. Muslims consume caffeine right along with the rest of the world, maybe more.
Coffee originated in Ethiopia and Muslims were the first to cultivate it and drink it. Many in the Middle East drink "Turkish Coffee", which is coffee that has been powdered, then boiled until it's super-strong, sometimes with sugar. The resulting coffee is so unbelievably strong... hard to describe.
The Latin name for the most common type of coffee is Coffea arabica and coffee is sometimes referred to as "The Wine of Islam". Muslim nations drink a lot of it.
From the National Coffee Association of the USA:
The Arabs were the first, not only to cultivate coffee but also to begin its trade. By the fifteenth century, coffee was being grown in the Yemeni district of Arabia and by the sixteenth century it was known in Persia, Egypt, Syria and Turkey.
Also: http://www.nationalgeographic.com/coffee/
The word "coffee" is derived from an Arabic word, btw.
Finally, some Muslims keep dogs for service reasons (hunting, guarding), but pork is a no-no, period. It is "Haram" ("forbidden").
See my post to llandres. I misunderstood.