Check offline behaviour
Know what happens if Wi-Fi, the app or cloud service is unavailable.
Subscription costs matter
A tracker or camera may require ongoing service fees.
Privacy matters
Cameras, microphones and location data deserve the same account-security attention as other smart-home devices.
Mechanical basics still matter
A smart feeder still has food-contact parts and a tracker still needs a secure physical attachment.
General product-selection information only. A pet's health, anatomy, mobility, breathing and behaviour can change what equipment is appropriate. Follow product directions and ask a veterinarian or qualified animal-care professional when those issues matter.