Tag Inside Pikachu?

I found a 20” pikachu and I was so excited till I felt it’s right paw and it had something semi solid in it? Kinda like the butt tags. Anyone know what’s up with that

I found a 20” pikachu and I was so excited till I felt it’s right paw and it had something semi solid in it? Kinda like the butt tags. Anyone know what’s up with that