All of my cameras have been birthday/Christmas gifts. I knew the previous digital was wearing out, but it took me several years to finally be forced to a decision. My options included a more expensive camera with two lenses. Ultimately, I chose something in your price range [the store CEO is also a frogtographer, and he, I, and my father had phone calls, emails, and examination and testing of various choices.
I chose the Canon SX20IS. More recent versions of this include the SX30IS.
Ok...Canon...has a better sensor for low-light situations than other makes. This is important for terraria, forest, nighttime, etc. It also focuses *to the lens surface*. In other words, so long as you have good light, you can TOUCH the frog and it will be in focus. It has 20x zoom [30 for the newer model]. It's usually easier to get a LARGER picture, using flash and zoom from a meter away, than no flash or zoom in macro mode. Built in flash and focus-assist light. 14Mp is good - that's poster-sized without cropping, or stupidly zoomed and cropped to still get a good sized picture - more than this is almost pointless in my view. Storage - multiple types, including SD. HD output, USB output, AA batteries [very important if you can't recharge or replace a proprietary battery in the field]. HD stereo video [!]. Easy to use settings, programmable functions, and a style which corresponds to traditional comfortable SLR style.
It's usable straight out of the box without much fuss. Some things need to be read-up on or practiced. I still have a lot to learn about its use, many thousands of photos later, but it's been producing quality images from day one.
These aren't the best photos...but I like them because they're good, and can be animated by flipping back and forth [lucky coincidence]. Taken with flash from a couple feet away, post-processed for standard corrections, no cropping, huge reduction in resolution.
Taken in the dark with LED lighting over the animal instead of flash worked much more nicely.
Various processing, plus the usually reductions for online use:
Uroplatus malama
Boophis goudoti
Lampropeltis leonis
Gekko gecko
Monocentropus lambertoni
Atelopus hoogmoedi