I got a new Toy Poodle cartridge a few days ago and decided to record the first few hours of it! I recorded on my original Nintendo 3DS with a capture card.
I play with my dog, go on the walks you start with and see most of the places (including going on the longest walk I've ever been on since so many dogs kept wanting to spend more time with mine), look at the other shops, and finally do the competitions! I also got some very old Streetpass encounters from my other 3DS's as well, so you get to see what Streetpass in Nintendogs+Cats during walks were like.

1:33 Bringing my puppy home
3:53 Naming and teaching her sit
7:44 First trip to a shop
11:18 Teaching left and right paw
13:11 Our first walk
13:11 to 2:04:47 The other first walks (the last being the longest I've ever been on)
2:06:13 The first bath
2:07:31 Looking at the other shops
2:18:34 Lure Coursing Competition time!
2:24:14 Disc Competition time!
2:29:30 Obedience Trial time!

The Nintendogs and Nintendogs+Cats games are still the best pet owning games out there years later, and if you'd like a good virtual pet I highly recommend them!

Nintendogs playlist:    • Nintendogs  

Nintendogs Live playlist:    • Nintendogs Live