The data you enter on PawtyPal is stored locally on your device and is not shared with me or with third parties beyond Apple. If you are using TestFlight or if a have enabled crash reporting, then some crash report data may be collected and sent to Apple. Your data from a crash report is used exclusively to resolve issues related to PawtyPal.
For more information on what Apple collects and sends to developers upon a crash, see the following article from Apple Developer.
You may opt out of sending crash reports using Apple's guide on Share analytics, diagnostics, and usage information with Apple.