PetSmart is recognized as the world's largest pet supply and services retailer, offering a wide range of products and services to cater to various pets, including dogs, cats, birds, fish, and small animals. Customers appreciate that PetSmart carries the items they need at competitive prices, with many praising the ability to shop online and pick up in-store within two hours. The training services at PetSmart are highlighted in several reviews, particularly praising a trainer named Carol for making puppy classes enjoyable and effective. Customers celebrate their pets' accomplishments, such as graduation from training classes, and express eagerness for further lessons. Additionally, PetSmart's Pet Hotel receives positive feedback for its customer service and the care provided to pets during their stay. Many pet owners feel reassured by the staff's professionalism and affection towards the animals. However, there are concerns about a recent policy change that eliminated overnight staff, raising questions about the safety of pets left unattended at night. Overall, while PetSmart offers a variety of services and products that satisfy many pet owners, the lack of overnight supervision in the Pet Hotel is a significant point of concern for some customers.