To all the numskulls rating it 1 star because it makes you sad makes no sense... It is a movie about stray dogs... what would you expect rainbows and sunshine? Dogs come from broken homes same has humans. I do not know how you would expect anything different.
For the people who are complaining about not being able to bring your kids to watch; you are worse than the other bunch... This movie is rated R. Cartoons are rated R all the time. Just because dogs are cute do not bring your kids to a rated R movie if you don't think they are ready for that.