Thank you to everyone for your advice. Tank is a teacup and according to growth charts is going to be just about 4lbs. Lucky for me, Flik is the most docile lab I have ever seen and my daughter is amazing with animals. VERY GENTLE and loves 'em all! I have been thinking about my decision for a few months now, and he will be here within two weeks and I am starting to get really excited! I call my mom everyday for new pics and updates on my little man! I will keep everyone posted on how it goes!! Thanks again for all of your awesome advice and sharing your stories!!!