who told you about the telephone? There's no such thing as a phone in nintendogs! Unless there is, but so far to me there isn't.
Four pizzas
You are not to order your siblings around like that anymore. Sorry, this line is not to order pizzas on.
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NO pizzas are taty
If you have 8 half pizzas, you can combine them to form whole pizzas. Since two half pizzas make one whole pizza, you can divide 8 by 2. Therefore, you can have 4 whole pizzas.
Pizzas are not living organisms.
No, the Briard is not available in all version of Nintendogs and Nintendogs and Cats.
The nintendogs interior decorator will say it's closed, when you order a new room from it. If you order a new room from it, they will have to install it into your house. It takes 24 hours to do so, and it will be closed during those hours.
pizzas'?
No. Unfortunately Nintendo added no weather to the Nintendogs or Nintendogs + Cats games.
If you joined 8 half pizzas together you would have 4 whole pizzas. Two halves make a whole.