There is never a time when we go to Washington D.C. that we don’t end up going to the Smithsonian National Zoo. Some times it’s the outing we plan for a day, walking the zoo and learning about the animals. Other times, we may just be swinging by the zoo to say “Hi” to some of our favorite furry (or scaly) friends. There are so many reasons to visit this zoo, whether you’re a repeat customer like us or just happen to have some free time while you’re taking in the city on a “one and only” visit. No matter why you’re here though, the National Zoo should be on…