I have two siblings. Both now 14 weeks old. One is male, one female. I am surprised at how different they are. The male is smaller and eats less. He runs less and is more docile and cuddly. The female is much bigger eats twice as much runs more too. She is more wiggly when I hold her. She is not huffy but will wiggle to get away from me when I hold her. She will let me hold her but when she wants to get away she is VERY strong. Is this typical of difference between male and female or just different personalities?