Pusheen plushies have been released since 2013 and this -> is the first ever pusheen plush! As you can see, the shape is different.
See the second picture to spot a difference between the new and the old sheens! The old gif, maybe the first pusheen one is like the plushie!
In 2017, pusheen plushies are now more interesting but most of the plushie collectors are still looking for the old sheen!