There are several ways to tell if a Beanie Baby is counterfeit. The gold around the tag is printed on. The gold is uneven. The red ink is either a lighter shade or smeared. The edges of the tag are roughly cut.
Gold foil is slightly darker.
These are all pretty good ways to tell if a Beanie is counterfeit or not, but the counterfeiters are getting better. Recently, alot of counterfeit Pekings have been made and the tags seem to be getting ALOT better, but there are still problems with the actual Beanie. The pellets in the fake Peking are alot bigger than the pellets used in the real Peking. The fake Pekings face is pointier. The ears are square compared to the real Peking.