There's an app called Baby Connect to do same things, but for human babies. Among the ones we tried, we liked it the most. It includes ability to add another person, and then it syncs data with them (the feature i liked most). Perhaps that app might serve a good set of inspirations.
I can also imagine creating PDF report between user-given dates that people might need when visiting vet, or emailing them.
Thanks! I will check that out. It's possible to share your dog with other people, when you add a dog, the app generates a unique ID with a three-word-format you can share with other people so they can add the dog to their profile. I thought about this for sharing internally in the family, or for when you want your pet sitter to keep tracking your dog activities. And as the owner, you can revoke their access anytime.
The PDF/report is a great idea. I will give it a look on how other apps handle this to get some inspiration :D
I can also imagine creating PDF report between user-given dates that people might need when visiting vet, or emailing them.