If they are adults, you can identify a male by his testicles. If they're still young, you can tell the sex by the distance between the anus and the urethra: shorter on females, larger on males.
Sometimes hamsters lick each others bottoms prior to mating. If you don't want baby hamsters, I suggest you separate them.
Male hamsters do not mate. They are probably messing around, or practicing for if and when they do it with a female. Don't confuse mating with fighting, because they look similar. You didn't say whether they were babies, or what type of hamsters they were? I had a couple of baby Syrian boys who stayed together for an unusually long time, and were always sniffing each other. I also recently had a litter and when they were about 6 weeks old and waiting for a home, I had a cage of 4 of them, and what happened was that one of them kept sniffing the others' bottoms and picking a fight on them. If they are baby Syrians I expect you are confusing it with that, otherwise, I think it is one of the things I mentioned in my 2nd sentence.
They Swear and kick each others bottoms
Most people do, some more then others.
they get smarter bye watch the others
They do 'talk' but they do communicate.
not all hamsters have to be kept alone, in fact most hamsters like to be with others from the same type or family. dwarf hamsters, Chinese hamsters, robo dwarf hamsters, and lots more all like to be with family and others. If they are kept alone its either because of its personality, if they are put together with a type they don't connect with or because they see a threat . i hope this helps:)
because depending on the smell they can identify eachother
Yes flowers can trick insects into mating. I have read that they insects for years have been avoiding having sex with them!
Dodgeball
licking each others buttwhole
they should start to look like hamsters after 11-12 days (some take longer/shorter than others) hope this helped! xoxo iluvedwardcullen16
Of course there is all kinds of hamsters, like dwarf hamsters there the size of a puff ball , huge and even extreemly fuzzy hamsters, there are at least more than a hundred kinds of species of hamsters. Though wild hamsters are hard to catch, viciouse, and bite, plus may have rabies.