Nipples Milk Almost All My Pregnant Chihuahua's Nipples Are Full Of Milk What Does It Mean?

Almost all my pregnant chihuahua's nipples are full of milk what does it mean? - nipples milk

My dog is probably in his last weeks of pregnancy and yesterday there were only two of whole milk nipples almost 5 years and a half is probably down with a sad look, but they often work for and in some cases, top and bottom of the proximity to or she is born