Gradually you seem to be fixing some of the problems a little as the series progresses. This is definitely the best one so far as you used a few different locations and had more of a plot line with development. The animation was still incredibly lacking, but there were some minor improvements in this area, which was nice to see.
Again, no preloader, play button or replay button. Like there were in the 5th, there were some white lines on the edges of the screen during the intro and credits that could do with being removed. The pillars being the only thing with any depth when everything else in the intro is flat still looks odd and something needs to be done to try and remedy this.
The title in the intro is grammatically incorrect. It should read 'Sean's Terrifying Lizards' with an apostrophe, not 'Seans Terrifying Lizards', which would refer to there being multiple Seans who are terrifying lizards. ;)
Again the lip syncing seemed good enough. The issues you had in this area seem to be a thing of the past. Your choice of sound effect for the fly buzzing was questionable though. It didn't sound very realistic at all.
I was pleased to see some small improvements in animation such as Jake shaking his head, panting and a door being opened. You've proven that you're capable of doing this, which makes me wonder why you neglect doing it so much in other areas. You still had no animation between hand movements, making the flash appear very jerky at times. The lizards needed to be animated while Jake was handling them as well. They were motionless and didn't react at all to him having picked them up. This made them look too much like toys.
I thought that you played out Jake walking through the lizard room slowly for a little too long. It got boring after a while since there was nothing really going on.