Levels

No it is not to high, you could go as high as you wanted to I suppose.

No, if you go to high it is harmful to the piggie.

There's no point that too many levels is dangerous or unhealthy for the pigs. There are a few things to keep in mind when making several levels. Make sure noone can jump or fall to the lower levels, put in guinea pig safe ramps that aren't too steep, and at least 1 level should be big enough for all the guinea pigs without counting the other levels. Also make sure you can clean it and catch the pigs. Lots of people have made 3 level cages and I'm sure if we could still reach the top alot of us would build even more levels. I wish I could connect all of mine so there were 4 levels. The bottom is the boys cage, the 2nd is an empty level so we can lean in and catch the boys or clean the cage, the 3rd level is the girls cage and I'm putting on a 2nd level to their cage which makes the whole setup 4 grids high.