Microchip access is persistent
A compatible implanted chip stays with the pet permanently. That removes the daily dependency on a collar and is especially useful for cats that frequently lose breakaway collars.
Compatibility still needs checking. Use the manufacturer’s chip checker when available instead of assuming any implant will work.
RFID collar tags are easier to add
A collar tag does not require an implant and can be assigned immediately. It is also useful for pets whose existing chip is not compatible with the feeder reader.
The tradeoff is that the tag can be lost or removed. In a food-separation system, that can temporarily lock the intended pet out of its own bowl.
The feeder mechanism matters more than the identifier after setup
Once identity is reliable, compare lid speed, training mode, bowl sealing, bowl size and cleaning. SureFeed’s standard Microchip Pet Feeder uses a 400 ml bowl and supports wet or dry food.
Bottom line
Choose the most reliable identifier for the specific pet, then evaluate the physical feeder. Identity technology should solve access, not distract from whether the pet will comfortably eat from the bowl every day.