Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dog loves it, but owner not as much...

DOG'S EXPERIENCE: Loves it. Easy enough to get food out. Great build material. Easy to pick up and chew on. Sturdy so it doesn't break. Adjustable difficulty so it can be made harder or easier. Fun to play with even if there is no food there.OWNER'S EXPERIENCE: Such a pain to fill! Does not hold a lot of food. If you don't have it tightened to a hard difficulty the dog can just unscrew it easily and get all the food out. Works will all different sizes of food or treats. Small dog can easily grip it. Really a pain to fill it!