Pets

We have told Kamryn that when she is 7 (she is almost 6 now) she can have a pet of her choice (within reason:). We were reading a book tonight and she asked if she could have that dog when she is 7. I said if that is what you want when you are seven, of course. Bradyn then asked, "When I am 21, can I have 21 guinea pigs?"