They come in heat every days, Pregnancy lasts 16 days.
Yes two female hamster can fight but not as violent or often as male hamsters. female hamsters can get in rarely any fights
a couple times a day
Every 13 - 20 days 16 being usual
When healthy and with proper nutrition, every 24 hours for heavy layers.
Hamsters do have icheses
Hens ovulate daily: their eggs. If their eggs are fertile there is a chance of them hatching into chicks, if incubated correctly.
Hamsters do not menstruate, they ovulate instead. Therefore it'd be inaccurate to say one could get 'PMS' without menstruation.
No, hamsters are actually pretty territorial. They often fight with mates.
Yes two female hamster can fight but not as violent or often as male hamsters. female hamsters can get in rarely any fights
Once every 6 MBY.
Although, winter white Russian hamsters are often referred to as a dwarf hamsters, so, it's logic to say that the of these kind of hamsters are originlly from Russia.
Breasts do not HAVE to hurt to ovulate. However, it is often the case that they do. It depends on the person. Some times a womans breasts hurt, while another womans dont.
Hamsters do love hard boiled eggs. But you shouldn't give them eggs too often.
Yes they do. Most often, at night.
a couple times a day
I think gerbils will more often because they are more curious than hamsters.
There is no real way of telling, however, older hamsters often go grey on the fur around their eyes.