I've had several,
Smartest, was a lab/shepard/husky mix, taught her to speak, sing and whisper. Could recognise "one" "two" and "three"
Friendliest was an all white dog named "Blackie" she had some lab in her and a whole bunch of other stuff, I moved into a mixed neighborhood (back in the days when dogs roamed more or less free) and the neighbors weren't sure what to think when I would call her home.
Most loving was a pit bull/doberman mix ... yeah I know, but she loved everybody. When I was mad at her she would go hang out next door for a while.
most fun loving was a lab/newfie mix named mughead. loved kids and he learned how to slide down a playground slide just to impress them.

NaCl(mutts be the bestest)H2O ' />