We know biological samples can tell us about our dog’s health and breed ancestry, but is the saliva in your dog’s mouth enough to tell us your dog’s age and birthday? The answer is, in some ways, yes.
DNA methylation is a useful tool for assessing health and longevity—both in dogs and humans. Loyal scientists are studying aging through the lens of DNA methylation and epigenetics.
An average-sized dog may have 10 trillion cells in its body. If you stretched all the DNA in these cells end to end, how far would it reach?