Guinea Pig Scrapbook

http://www.guinealynx.info/pdf/GPs_G-Force_UK.pdf

http://www.guineapigcages.com The best and cheapest guinea pig cages that you can build yourself easily.
http://www.guinealynx.info This is the best resource for guinea pigs online. More medical knowledge here than most vets have!
http://www.cavyspirit.com/ The social life page is particularly informative, with the best introductions guide around.

From guinealynx:

 One ounce weight fluctuation is OK.
 Two ounces - Go on alert. 
 Three ounces - Extreme red alert. 
 Four ounces - Get the pig to a vet.

1 ounce is 30g

so a 60g weight change (in a week) is the “alert” value.

bloat