Collecta bending

I left some of my collecta animals in the sun after playing with them anfd i forgot to take them back and now baby pygmy hippo's legs are flexible and hippo's teeth are flexible too how can i fix this 

That is the reason, why i don't like Collecta horses.

Try cold water or the freezer, but i don't know.

Try to put them in very cold water, it may be more effective than in the freezer because water is almost as dense as pvc and it might to help to rearrange slightly the polimeres. Though, I'm not sure it will work and I hope the plastic is not with a sticky feeling.

Yeah thankfully its not sticky