Easy Mark?

Do I have a great big E (standing for easy mark, soft touch, pushover) emblazoned across mt forehead?  I really think I must, at least when it comes to my kids and classroom pets. For the second time in 3 years, I have agreed to let Joey bring home an animal they were observing and studying in science class. The first time, Joey brought home a gold fish and two little water snails. Somehow, that goldfish lived for over a year. This year, Joey has been going on and on about the African dwarf frogs they are studying in science class (there is another small aquatic animal they are studying but I can't remember what it is right now). I should have known they would be looking for homes for them when this unit of study was over but, somehow, I was caught by surprise. I was also caught in a weak moment because I said yes to bringing home and African dwarf frog and actually signed the permission slip and sent it in.In self defense, I picked the easier of the two creatures to care for. I mean, these froggies don't even need a filter in their wee little tanks because the vibrations bother them. So, today I sent Joey off to school with a container he could use to bring home the African dwarf frog and, once I dropped him off at school, I went off to find a small aquarium to keep the froggy in. I found a nice little one at Wal-Mart and it didn't even cost $10. I was starting to feel pretty good about this. I mean, how bad can it be when it will rarely need his water changed and the habitat cost me less than $10. When I got home I washed the gravel we have and made a gallon of treated water to put in the froggy's aquarium. Since Marty was busy with the school work he had assigned, I figured  I'd read up a little on the little dude Joey was bringing home. One of the first sites I found was written by a guy who had a pair of these little guys. He said his frogs had lived an average of 6 years.  Honestly, I was expecting them to have a lifespan like a goldfish. I kept reading and got to the point where he mentioned he wasn't sure about their maximum lifespan because his cousin had on dwarf frog that had live 18 years . What the hell have I gotten myself into? At least, unlike cats and dogs, I can ship this froggy off to college with Joey when that day comes.