[Rundlemtn]

This is the calculator I use to figure out the time between two dates Date Duration Calculator: Days between two dates. After Rundle turned 5 months, I stopped referring to her age in weeks and started referring to it in months. Most months are actually about 4.5 weeks. This is why counting age in weeks does not equate to how old the puppy is in months.

 

[Rundlemtn]

Then would is be safer to say that weeks are more "accurate" in terms of age, since month lengths can be iffy? It's just like when moms say their babies are "18 months" instead of 1.5 years. I'd imagine everyone would get incredibly annoyed if every dog's age was referred to in weeks..

Its not that months are inaccurate, but it is inaccurate to assume that 4 weeks equates to one month as this is not always the case. The reason why I refer to weeks in the early stages is because important developmental milestones and vaccine schedules are determined by weeks. However, I would say that after 24 weeks this is no longer the case, and milestones are mores reflected in months. Therefore, after 5 months it begins to make more sense to refer to your puppies age in months/years. I really don't care if someone doesn't like me referring to my pup as 20 weeks. Chances are if they have to ask, their age doesn't really matter to them and they can go use a calculator later if they really need help figuring it out.