Wooden toys are best for these pets.
Pet stores sell all kinds of toys for guinea pigs, but home-made objects, like a box with holes, provide hours of fun for your guinea pig. Some examples for toys are: ping-pong ball, box with holes, rolling ball. But do NOT give your guinea pig toys for other animals, as they may chew and choke on the small parts.
If your guinea pig's teeth grow too big you can take them to the vet or you can give them hard food and toys to chew on.
At least 6 or more toys.
No you cannot , They splinter and break far too easily and your guinea pig could get hurt from it.
First of all, you should not give a guinea pig ANY MEDICINE unless you are a licensed guinea pig vet or a vet specialising in guinea pigs, and you shouldn't go to an online vet as these are not always correct, so if you think your guinea pig is sick take it to a VET
A new guinea pig?
well .... it could be that your guinea pig has mites but it could also be something from outside. Something you can do to please your guinea pig is to masauge it in back of its ears.
I would just give my guinea pig "love".
Of course you can give guinea pigs grass. In the wild, that's what guinea pigs grow up eating. Make sure though that the grass does not have any chemicals or anything else on it that could make the Guinea Pig sick.
the guinea pig could be injured or the fall could have killed it.
Some cat toys, specially made guinea toys, dog toys
No,it is too much acidic.So,they are bad for Guinea pig.