yes you can as long as there is no female ducks around :)
yes
when two male live togetherthere is no 'relationship'between them so they will be selfish towards each other and they will begin to fight over things.
Yes. Chickens are quite social birds and once dominance is established the two hens should get along fine. Most chickens live together in what is called a flock, many birds grouped together. Two layers will not be any problem at all.
If it's male, it doesn't matter, just make sure they get along
No you cannot, only if you are breeding them and the female has eggs. Otherwise the male will eventually kill the female. 2 females can live together.
They should live 2 or more. But male mice can't live together always. If you see your male mice fight or beep you should split them. Also i don't recommend to have more then 10 females together.
normal. 2 males can live together. so can male+female without mating. but get rid of one. they may fight to death.
no they will fight and might kill each other
Well it's not a good idea, but yes. You would have tohave both of them fixed though.
There's now way to sex oscars. Oscars aren't able to breed until they are 2 years old. The male and female can live together. Oscar fry need to be removed or put into breeder box so they don't get eaten.
yes, a male and female lovebird can live happily together and will also breed in a cage but the cage have 2 b appropriate.
That depends on how well the chicken is taken care of - but chickens are known to live 12+ years.
No.