I've got a 4 year old border collie but she hasn't been eating for about a week and normaly she's a ball of energy but she's been really dopey lately.


Can you please tell me what's wrong with her?

You need to take her to a vet. If you can't get her in today, since she has gone all week, likely Monday will be soon enough. Read the section of the sticky on ''My dog won't eat.'', https://www.askmehelpdesk.com/dogs/information-articles-our-dogs-expert-labman-53153.html#post254171

Border Collies tend to run on the thin side and low on reserves. Usually tempting a dog with rich food is the worst thing to do. Certainly it is no substitute for getting her to a vet. If you can't until Monday, you might try some cut up hot dogs or cheese.