I gave a potion to my pet and it became experiment. how can I get it back as before ? Thank you.

What did it used to be? You'll need an elixir to change the species and a potion to change the color back.

Thank you. It was a paralyx. Well, I suppose I'll buy the items, I can't stand it as it is now.

there's a handy site HERE to use in the future for any items you get and may not be sure of the use before you buy or use it

you are right, thank you :-)