Nintendogs Pet Limit: 3 Dogs (Original) vs 6 Pets (Nintendogs + Cats)

Maximum simultaneous pets:

• Nintendogs (DS): 3 dogs
• Nintendogs + Cats (3DS): 6 pets total (any dog/cat combination)

Original Nintendogs stores additional dogs in the "Hotel" (up to 8 more), but only 3 reside in your home at once.