I have a 2 year old and a 4 year old and both enjoy these animal shapes a great deal. The educational value is what you make of them, you can match the tops and bottoms and talk about the animals, or encourage mis-matches and then have fun naming the composite animals and guessing what noise they would make. The four year old finds this especially funny.
They stick pretty well to both bath side and tiles and dry nicely when kept in a netting bath-toy bag which I bought separately. My guess would be that it's not a good idea to keep them in the plastic jar they come in, but the jar has found another use keeping other dry toys in. I just have to stop the two year old chewing them, and I'm sure they'll last.
There are quite a few animals in the jar, more than you can see in the picture, good mix of farm and african animals. Overall a good alternative to your average squirty rubber bath toys at a reasonable price.