Thanks articsteve, I appreciate it.
I only found this forum because I was trying to research some different vehicles before buying something. You all seemed to have so much good advice for others that I thought I'd give this a try. I'm no car buff or anything, just a regular mom trying to buy a decent vehicle. I just happen to have 2 dogs as well. There's so much out there that it can be very overwhelming when trying to choose.
I'm sure there are other forums out there for those who want to give their opinions about pets.
You'll get lots of great advice about cars, I am a Car Commoner as well.

I came here for advice and lost my way, can't leave. This forum is quite different in some aspects, we do tend to go on a self-assumed-philosophical discussion of one's needs. You can ignore the banter, opinions are good hearted here.
So far people are only opining about minivans, thats being on topic. Nobody has suggested a Volvo or Subaru as of yet.
On your used car list, Sienna sounds better provided its in a good condition. The rear seats fold flat in the floor and looks like you won't be taking out the 2nd row seats with the child seat installed permanently.