Sudden guinea pig agression

Question
My giunea pig Halee is suddenly very nasty when I go to pick her up. She's fine
when you pet her in her cage, and as soon as you're holding her, but whenever I
go to grab her, she turns and bites. It has even come to a point where she has
drawn blood. She's less than a year old and I've never had this problem with her
before. Please help me!!

Answer
Hi Jenna

Can you answer two questions for me which should help me to help you.

1) When you try to pick her up is she sitting by her food dish and is she facing you or facing away from you?

2) Has anything changed in her living environment recently.

Andy