If the baby has two X chromosomes it is a girl but if its X and Y chromosomes its a boy. If you keep your penis in your partners vagina too long then you will have twins
There is nothing particularly distinct about male and female mules. As a rule, though, there is a difference between mules and hinnies. About 80% of hinnies look exactly like mules but about 10% look...
Crossing a zebra stallion on a horse mule produces a Zorse. Zebra hybrids are usually the result of a male zebra bred either to a female horse (zorse) or to a donkey jennet (Zebrass or zedonk).