an extra problem is that a lot of smaller airfields in the EU , are not certified by the European Union for handling pigs at their airfields.
so even if the carrier wants to take it, it still can give a problem.
also pigs produce a huge amount of methane gas, which is flammable when getting too concentrated.
I agree with most of the guys that most probably only cargo a/c might be a correct solution ( even costing more money)