Look up a food product
Name a commercial food; Petus finds what's published and checks the fit.
"Is this brand any good for her?" Name the product and Petus looks it up: ingredients and analysis as the maker publishes them, checked against your pet's species, life stage, and allergy list.
One caveat travels with every lookup: it stays unverified until you confirm it against the physical label. Recipes change between batches and between countries, and the bag in your hand outranks anything published online. If you have the bag, photograph the label: the label read is the ground truth.
A lookup never writes to the record by itself. If you do switch foods, say so ("she's on this now") and the record updates from your words, with your confirmation.
The useful question is rarely "is this food good?" but "is this food good for this pet?" — the lookup always answers the second one.