Have you ever seen this color of Teddy Bear?

To add to the answer above, check if it has the LEGO logo and the mould number molded on the bottom. Both should be clearly visible. If they are there, it's LEGO, if not, it isn't.

Neither Bricklink nor Brickset knows about such a piece (all teddy bear pieces of this mold with downward arms come in non-transparent colours and are printed), so it must be either a knock-off (very low value), or a test mold (very high value).