From Rover's Terms of Service:
2.2 Rover.com does not provide Pet Care Services. Rover is a neutral venue for Service Providers and Pet Owners. Rover is not a Service Provider and, except for emergency phone support and other resources and support specifically described in the Rover Service, does not provide pet care services. We make no representations or warranties about the quality of boarding, pet sitting, dog walking, house sitting, transportation, or other services provided by Service Providers (“Pet Care Services”), or about your interactions and dealings with users. Though we provide general guidance on our Site to Service Providers about safety and pet care and to Pet Owners about selecting and engaging Service Providers, Rover does not employ, recommend or endorse Service Providers or Pet Owners, and we will not be responsible or liable for the performance or conduct of Service Providers or Pet Owners, whether online or offline. We conduct an initial review of Service Provider profiles and we facilitate background checks on Service Providers conducted by a third party, but, except where explicitly specified in the Rover Service (and then only to the extent specified), do not otherwise screen Service Providers or Pet Owners. You should exercise caution and use your independent judgment before engaging a Service Provider, providing services, or otherwise interacting with users via the Rover Service. Pet Owners and Service Providers are solely responsible for making decisions that are in the best interests of themselves and their pets. For example, each user of the Rover Service is responsible for keeping current his or her own pet’s vaccinations, and we will have no liability for anyone’s failure to vaccinate his or her pet.
https://www.rover.com/tos