I like it

Nice job. The preview was hard to see/click on (dark themes), maybe it should be a bit bigger.

But what hapens to the hippo/shnauzer (I agree, it looks like a cute puppy!) after it is vaulted into the air? Why does it disintegrate? 
I think you could make better use of the colours to make it a bit more readable; the hippo is hard to see against the background, as is the lever/paddle/swith thing. Why are those gears there? Is that a trampoline or is it some kind of air-blower?

It just doesn't read as totally finished to me, sorry.

reminds me a bit of a contraption one might find in 'the incredible machine' (a computer game I played when I was a kid)

would be cool if the conveyer belt moved, and also if the hippo paused a split second (while at the lowest point) before bouncing up.

also your hippo looks more like a schnauzer to me :P