Amanda Bynes -- Fit to Walk the Dog ... After Leaving Rehab

Amanda Bynes is coherent and accepting compliments from the paparazzi again ... and sounds better than she has in more than a year.

Bynes took the family dogs for a walk with her parents today ... after she was sprung from a Malibu rehab facility earlier this week. She'd been getting treatment there for mental illness since September.

We asked Amanda all sorts of questions ... but there was only one topic she really wanted to discuss. Check out the video.