In the past we've had a logo theme of reptiles wearing sunglasses under an umbrella. We are not married to that concept...but you could score some extra points by giving us a reptile with sunglasses and/or an umbrella. On the other hand we wanted to try 99designs to blow our minds with totally new concepts, too. However we are used to having a clean, family friendly lovable animal image along with our unfortunately long name "Forgotten Friend Reptile Sanctuary". I'll attach a couple images of our past logos, and you can decide if you want to follow those templates of reptiles with sunglasses under umbrellas, or go a totally new direction.
One thing I like is having a logo that is centered and symmetrical. The frog and turtle logos below are not ours, but I like how the animals in those logos are the center of attention and the name of the organization cleanly and symmetrically surrounds the animals. Even the orange lizard is a neat character image that is well centered by the company name. In our old snake and iguana logos, I always felt like they were a little lopsided. You can probably tell our first logo of the snake under the umbrella was designed in the original Windows Paint Shop many years ago, so it was cute and simple although it quickly became low tech and outdated. One idea we had (in the sketch image) was to have a sun surrounding the central character, but it never looked right.
I really like the look of the frog logo as an example. But I need to point out that frogs are amphibians (not reptiles) and we need to keep a reptile (or reptiles) as our central focus, whether they are more cartoon like, silhouettes, or even more lifelike drawings. We are an educational group, so life-like is great. But over 90% of our programs are for kids, so the kid-friendly drawings appeal to us also.
I hope this gives you some artistic direction. Thanks!