Why isn't Scout recognizing my pet?

It sounds like you might need to adjust Scout's Pet Recognition Sensitivity. Here's how: 

1) Tap the settings icon in the top right corner of the home screen, then "Pet Recognition."
2) Slide the Pet Recognition Sensitivity bar to adjust Scout's sensitivity level. Try adjusting it one level at a time and check the results. It might take a few tries to find the right setting for your pet and their environment.