How do you know if your dog's pregnant?

Apart from running around after your dog waiting for her to wee on a pregnancy stick, "How can you tell if shes pregnant?"

Sounds stupid but she wont eat her normal biscuits and shes in a bad mood a lot, Hey I've had a baby I know what its like !! lol

Plus how long gestation for dogs??

1- Watch for sudden changes in the dog's appetite. An early sign of pregnancy is a decreased appetite. This usually happens in the first few weeks of the dog's pregnancy. She'll have an increased appetite as her pregnancy progresses.
2- Notice if the dog's behavior changes. A decrease in activity may be a sign of pregnancy. Also see if your dog suddenly becomes either more or less affectionate. Dogs react differently to pregnancy, but the sudden change is the important sign.
3- See if the dog's nipples increase in size. Early in a dog's pregnancy her nipples swell as will the tissue underneath the nipples.
4- Look at the dog's abdomen if you suspect the dog is pregnant. A pregnant dog's abdomen looks firmer. The size of the abdomen does increase, but how much will depend on the breed and how many puppies the dog is carrying. Unless the abdomen is dramatically bigger, firmness is the better sign.
5- Feel the abdomen. Any movement felt in the abdomen is a sure sign the dog is pregnant.
6- Pay attention to whether she begins nesting. A pregnant dog makes a soft place to deliver puppies one or two days before she delivers. She might also be more restless during this time. This is the final sign she is pregnant.
lasts only 63 days

hope that helped.

imme has it covered

I just went through this with our Chihuahua. Imme's answer was very good. I think it was at about week 5 that her belly started getting firm and you could feel them kick at about week 7. She delivered in 60 days, but 63 is supposed to be the norm.