I believe 6 weeks is as early as any puppy can be neutered.
Yes it can. ;D Especially in a letter. ;D Hope I helped.
The pull out method is more like a method to get pregnant to be honest. There's pre-cum that he can not feel and it's there to clean the urethra before the actual ejaculation. The earliets signs...
I would need to know context to be certain, but 'at the earliest'would usually be better.
ash Wednesday a.k.a. 2/25