no
i have to add to this answer because NO!! dog is born with an aggressive personality! it is how the owner decides to bring the dog up which depends on the personality!
Jack Russell was born on December 5, 1960.
David Russell Jack was born in 1864.
Jack 'Russer' Russell was born in 1753.
John 'Jack' Russell was born on December 21, 1795.
Jack Russell - footballer - was born on 1904-06-19.
Jack Russell - baseball - was born on 1905-10-24.
Jack Russell was born on December 5, 1960.
Jack Russell was born on December 5, 1960.
Jack Russell was born October 24, 1905, in Paris, TX, USA.
John 'Jack' Russell was born on December 21, 1795.
Jack Barry - television personality - was born on 1918-03-20.
jack Russell's were invented in 1834 the first jack Russell in the world to be alive it was a puppy black,white and brown very hyper I found all this in my history book about dogs every single breed in the world. :D :D :D