My pet aggressiveness

I had a couple of Jack Russell Terriers. The male is 4 years and the female is 1 and 1/2. Last September they had puppies. My little daughter has choosen a female for her. Since some time ago the mather became very aggresive with the little one. I really don't know what to do as my daughter really loves her pet and doesn't want to see her leaving, but at the same time she is very afraid of any damage. The mother had her last menstruation early this february, and since them she's been even more aggressive. She loves my husband and doesn't accept the little one near him. She always tries to beat her neck. The mother as well as the little one show strong character.
What can we do to solve this problem and keep both of them with us.

• Re: My pet aggressiveness Feb 27 (0)