I know there was this one movie that was a cartoon - it must have been early 90's, late 80's. It was about a bunch of dinosaurs that were in this space ship and liked to play golf.. or something, and then they came to earth and befriended a girl and a boy. And at one point they went to a circus or something... and in the end the dinosaurs had to leave. Does anyone remember the name?

And there was a Disney Channel Original Movie about like this guy who wanted to get in contact with aliens, and he met a dog who was an alien and became his best friend or something. Anyone remember that one?

Hi, the only movie that comes to mind for the second is "Good Boy! (2003)"... I don't believe this is the movie you are looking for though. Sorry I can't be of more help.

Good Boy! (2003) (http://www.imdb.com/title/tt0326900/)

I know what the first movie your talking about it... The dinasaurs are brought to earth by mark twain... As soon as I can think of the name I'll get back to you... sorry just found this post.

Just found it... it's called "We're Back" Here's the link to where I found it. Hope it's the right one

We're Back! A Dinosaur's Story (1993) (http://us.imdb.com/title/tt0108526/)