On the pet card, you are able to add a general warning that applies to all modules.

You can also add specific warnings for each module.

You can print a report for each module that has pets on the schedule with warnings.

For example, here is a Board Pet Warning report.  This is a list of pets on the schedule for 6/4 that have either a general warning or board warning.

You can print a report for all pets in the database with any warning.  Click on Reports, Lists, Pet Warnings.