Do European PhD programs offer the opportunity to take on teaching assistantship duties?

I know that, in North America, the opportunity is given (and often mandated) to take on teaching assistantships while in a PhD program.

I knew that, often, European PhD programs pay you to do RA from day one. But, in European PhD contracts/programs, are there countries, or universities even, that set conditions under which you have to TA? Or can you even TA in the first place?