Personally, I would start out with some interesting fact, like......(this is made up, but) "There are currently about 20 million snakes in captivity in the united states. The most common of these snakes is the Ball Python" When you start out with something that grabs attention, people are more likely to listen. You don't have to read that from the slide, but have a map of the states maybe?
Then I would also split up the husbandry information onto several slides and have pictures of their natural habitat, then what they need in captivity, their tank set up etc. Talk about how their natural habitat and the tank set up relate to one another.
Just some ideas! Sounds like you have a pretty good plan of how it is going to be. Maybe show us how it turns out after!
Good luck.
As far as work cited goes, it does not have to do with making a profit and she needs to seriously question his/her understanding of plagerism, although it is probably not a huge deal depending on what grade you are in.