Kurangi tahun anjing Anda dengan 2. Kalikan jumlah umur tersebut dengan 4 lalu tambahkan dengan 21. Ingatlah bahwa perhitungan ini hanyalah perhitungan kasar.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Note that your dog needs to be at least two years old. This when dogs are considered to have reached adulthood. Now you will have an estimate of your dog's age in dog years. For example, if your dog is 10 years old, then his age in dogs years is 53. Because this method does not take your dog's size into consideration, it cannot be completely accurate.  This calculation will be more accurate for smaller dogs than larger dogs. For example, as we calculated above, when factoring in size, a Great Da