Sounds like a good idea!

I would exaggerate the squishing when it closes its maw a fair bit more. Would give it more dynamism! 

Thanks. I was trying to limit the frames to what would be possible on an NES. I might've gone a bit mad with the palette and sprite size though.

I kind of like the sharp animation it has - nice job!

Thanks. Aye, another few frames for extra bounciness!

pretty good, but I think it needs another frame or two