I have a very hyper Jack Russell Terrier and from day one the vet said she would need to have the puzzle toys to actively work for their treats. Well after shopping in PetSmart for one I left disappointed by the extremely high prices! So glad I found this, she loves it, it keeps her busy for about 20-30 minutes which is perfect for me so she is busy while I cook! haha, Anyways certainly worth the money, easy assembly and works just like discription said it would!