Is "Cats" a Game on Nintendo DS Lite? No—But Catz, Nintendogs, Petz: Catz Clan, Sims 2 Pets Exist

There is no game titled simply "Cats" for the Nintendo DS/DS Lite. You may be thinking of:

• Catz (Ubisoft) – Pet simulation series; Catz (2006) and Catz 2 (2007) were released on DS.
• Nintendogs – Features dogs only, but similar pet-care gameplay.
• Petz: Catz Clan (2008) – Another DS pet sim.
• The Sims 2: Pets – Includes cats as playable pets.

If you describe the gameplay (e.g., raising kittens, mini-games, art style), I can identify the exact title.