I don't mean use the highlighter, I mean left (make sure its actually left) click near what you want to print and hold down, dragging it over everything you want to print. Besides that;
If the thing you are downloading is just an image, try saving it to your computer first, and then clicking "picture" to load it to wordpad. To make the font bigger, change the font size to a much more noticeable font like 14 after selecting which words you want to change. If the font is in the picture, you cannot change it, but you may be able to make the picture itself bigger by clicking the middle of it, grabbing on to one of the sides, and pulling it outto your desired size. if it looks distorted, pull it out the other way as well.
This must be a serious project if you are still worried about it even now
I may not entirely be sure what is going on, perhaps the image from the web is not a good one? Because I just pulled your image of your cat off of this site and put it on word pad just fine, with words of different font all over the place. I uploaded what I did so you can see it. Try a different picture maybe?