After signing in to PerfDog, click My stuff in the top menu bar (on mobile, click your initials or the image in the upper right corner), then My dogs.

Choose the dog you want to edit.

Then click the Edit button.

Click inside a field and type to change the existing data, such as dog titles.

Click the X next to an incorrect Sire or Dam. Then type the correct name. If it's a new sire or dam (to PerfDog's database), they will not appear in the dropdown. Instead, you'll see a line that says "Add sire/dam name." Click that to fill in the field for the sire or dam.

Continue to Review and Save to make sure the dog's info is saved.