Yes Morkie his name is Kujo, I let my son name him

Thanks for the water bottle idea.
When I first saw him and him being so tiny ,I was afraid she may have been lying about how old he was,I couldn't imagine something so tiny.
He goes to the vet Monday,but what can I look for myself to determine roughly how old he is?..He is very active,chewing and tugging and running all over,so to me he acts older than he looks.
I have never owned this small of a dog and just wondering.