About 3-5 pellets.
depends on how old they are. if they are out of the nest box and have stopped nursing you should be feeding them "Pellets" they are Little pellets of: hay, salt, protein. you should give them about 1/2 cups of it.
you should have 2 or more because they get lonely.
2 boys
Well you should take the guniea pig to the vet so you can find out the best course of action. That way you can see what the guniea pig is sick with. That is all you really can do because you don't know how to fix something in you don't know what it is.
Should not be a problem as the pellets should not begin to melt below about 350 degrees F. At worst, they would melt together into a blob and ruin the item.
Canine yoga
Being an in line you should have no trouble with pellets.
They won't give you the source of nutrition you are looking for, but the pellets should pass with no difficulty.
They eat simple grass (or hay) based guinea pig pellets that DO NOT contain seeds, dairy, nuts, dry fruit or colourful pieces. Raw fibre percentage should be around 24% and the pellets should have vitamin C added.
beause of itscountry
no horses should eat varieties of food relevant in their diet
1-5 pellets a day