If this doesn't convince you to adopt a friend and make their life a little better, I don't think there is anything that will.
These are all images of animals who were adopted, given some cleaning, attention and love, and had their whole lives turned around! You can imagine that if you can see the physical change of the animals that the emotional changes they were able to go through are just as great.
Don't be heartless: adopt a friend that needs your help!!!! Comment if you are the proud friend of a shelter, abandoned or neglected animal :)
I found all of these pics through an awesome subreddit called Before and After Adoption. So if you need any more inspiration for adding another member to your family, check it out!