How to use :

• Extract your save with a homebrew (JK's Save Manager or other)
• Open sysdata.dat, edit
• Re-import your save with a homebrew (JK's Save Manager or other)

Features :

• Edit Money
• Unlock all items by numbers
• Edit interiors designs
• Edit animals names

Releases :

https://github.com/Brionjv/3ds-Nintendogs-cats-Save-Editor/releases

Page :

https://gbatemp.net/threads/release-3ds-nintendogs-cats-save-editor.473694/