I'm so glad you posted this. My Bella is 14 weeks and is only 1.6lbs. The vet tech told us she was 1.9lbs at her 1st vet check, but when I took her for shots a few days ago, said that it was written down as 1.6 then and she's still 1.6! I wanted a small dog, but I was thinking an adult who is at least 5-10 lbs. But, I love her dearly and hopefully, she will get much bigger. So anyway, I am curious too to find out the things I should be wary of.
I DO have to be careful with her also, though, with the jumping off of stuff. She'll fall asleep on my lap, but wake up suddenly and try to launch herself off of the couch to get to the cat!
And she often jumps from the 2nd step to the floor. She is a fearless lil thing!