This picture shows well, that she starts to be now fully grown up, in age four. It is amazing how much mastines develope for a such a long time. For example I would have never quessed, that our Tico will be as hansom and powerfull as he is. Tori has "all signs of adulthood", full papda, her body has fullfilled all over( if you understand what I mean) and her character is calm and so self-certain, it can be sensed from the pictures. Marvelous female with beautiful, deep colour.
Yes, most mastines are at their best when they are 4 to 6 years old. A (very big) pity that their show-carreers end at 2 or 3 years of age ... Or even earlier ...