Instruct: Classify a review into positive or negative sentiment.
Query: Expensive, but my cat is thriving on it

I decided to switch my cat's food because she was having all kinds of problems: excessive throwing up, urinary tract issues, and significant weight loss that the vet couldn't explain. I switched her from Kirkland dry and Friskies Turkey Pate canned to Wellness dry and Wellness chicken formula, and it's been almost an overnight miracle. She's put on at least a pound in 3 weeks (she eats an entire 5.5 oz can plus dry food every day--no more pushing the food around and not really eating), no more straining on the litter box, and she hasn't barfed in over a week! I'm really impressed at what a difference this food has made for my cat's health.