It seems your dog doesn't want to be the alpha. She is simply 'surrendering' herself to the other dog.
Normally a female (of any breed) will come into heat approximately every 6 months. It could be sooner if they are around another female in heat.
I have a Male English Mastiff which is called Murphy. If you do not like this name, and you would like another one starting with M and it is a boy, please go to: http://www.2babynames.com/babyboym.shtml Copy and Paste, please. Hope this info helped you a lot!
I have a female English mastiff that is a year old and just weighted in at the vet at 120lbs...don't know if that is normal, but thought I would try to help out.
Since they are both of the species Canis Lupus Famililiaris (despite obvious size, and appearance differences) its possible artificially, although its morphologically impossible for it to be achieved naturally due the size of the male Chihuahua and the massive size of the Mastiff. If the female Mastiff was artificially inseminated then she could easily whelp the puppies. As to the appearance i am completely unsure, i am personally trying to get a little just from sheer curiosity. I have a friend with a pure English Mastiff female and another with a pure Male Chihuahua, both are from healthy and temperamentally sound bloodlines so i might make this happen!
The average height for an English Mastiff is approximately 30 inches or 2 1/2 feet tall at the shoulders for a male, a female is typically a few inches shorter.
Your puppy's size really depends on the size of it's parents, and if your puppy is male, or female. Generally, at 3 months of age a male English Mastiff puppy weighs around 45 pounds, and a female around 39 pounds. Your vet would be able to tell you if your puppy was over or under weight.
Female mastiff puppies will go into heat between six months old and two years old. The 18-month gap in the possible onset of the first heat is because of the size of the Mastiff breed. Dogs are usually in heat 1 ½ to 2 weeks, every 8 months.
if its a English mastiff male cross with a female pitbul of good quality, then we can expect a 30inch for the new breed. and it will carry the activeness of the pitbul
PMT....everytime
It means that everytime you have an argument he's going to run to another woman. Find a new man.
The English Mastiff is a "giant" breed of dog. Males typically can weigh 150-250 pounds (68-110 kg), a typical female can weigh 120-200 pounds (54-91 kg). According to the AKC, standard height for this breed is minimum 30 inches (76 cm) at the shoulder for males and a minimum of 27.5 inches (70 cm) at the shoulder for females.
== == mother , mum (English) , female carer , female parent , woman , woman/female who gave life to me , human being