No, not in particular. The mutable signs (Gemini, Virgo, Sagittarius, Pisces) in general indicate multiple births.
Not naturally, if you want to have triplets then you have to have a download a mod for multiple births.
you can have triplets naturally if they run on your side of the family You can have natural triplets even if they don't run in the family. My mother had triplets (including me) and there is no known history of multiple births on either side of my family.
This will vary by breed - some are known for multiple births (such as the Polypay) while others typically have single offspring. However, triplets are fairly rare even among the multiple birth breeds.
It takes 40 wks for a foetus to reach full term maturity in single or multiple births. Multiple births are induced earlier if there are problems.
Siblings can be the same age, in the form of twins and triplets, and other various forms of the multiple births.
Not very often. It is more common for a cow to have twins than triplets: triplets occur maybe 1:100,000 births. A cow will have twins 1:1000 births.
The incidence of triplets has decreasing, not increasing, for more than ten years.
If we name them the same as multiple births following the pattern of triplets, quadruplets, quintuplets, etc. it would be nonuplets.See Related links below.
Chance of having 'natural' triplets: 1 in 8,100 (only about 30% of triplets are 'natural') There has been an increase in multiple births in recent years. Since 1980, infertility treatment has more than doubled the American twin birth rate. The rate of triplet or more births is now nearly 5 times higher than before infertility treatment was used. http://baby2see.com/multiples/multiples.html
once every 500,000 births
Right now there is a little over 6000 sets of triplets in the U.S. 1 in every 1,000 triplet births are identical.
I don't know. Probably one in 700 to a thousand births would be my guess. : D