Warning: if you don't like pregnant expansions please go back.
A few months ago I made a picture of a pregnant Mightyena. So I decided to make a pregnant Houndoom as well. At first I had been planning to make it a picture, but I changed my mind after I saw this small interactive application:[link]
So this drawing is very simple, it has no shading or anything, that made it easier to animate. In this program you can click and hold "Expand" to make Houndoom bigger and "Revert" to make her smaller. Autoplay will make houndoom bigger without having to hold the button. You can drag Houndoom around and zoom with the "+" and "-" buttons to take a better look.
So Houndoom is quietly sleeping by a rock(a rather unusual position for a Houndoom anyhow) and she is awakened by some strange force - that you are applying - on her belly. She is then shocked when she finally notices it's expanding, and stares at it puzzled. When it begins to get too big she just looks in disbelief, sweating more at the sight of her overgrown belly.
The program isn't very consistent. It was complicated to coordinate the buttons and it seems to work well enough already. The names of the buttons don't change in some cases where they should, but that's just not very important.
I suppose people who are interested in expansions may like this program, otherwise you may find it quite pointless.