Personal experience has taught me that there is no standard size for any breed.
I have had Danes with no more than 4in before the knot mind the knot.was probably almost the same .
My Rottie is an easy 9.5 before the knot my risgeback a solid 8in
My mom's Rottie mastiff Cross's one 10in before a 3 in knot the other 8in
The biggest doggie cock I have ever taken was a medium size mongrel with 14 inches of cock and knot that went so deep he opened my posterior Fornix
I have had Danes with no more than 4in before the knot mind the knot.was probably almost the same .
My Rottie is an easy 9.5 before the knot my risgeback a solid 8in
My mom's Rottie mastiff Cross's one 10in before a 3 in knot the other 8in
The biggest doggie cock I have ever taken was a medium size mongrel with 14 inches of cock and knot that went so deep he opened my posterior Fornix