some do. You can find a similar placental mammal for every marsupial animal. Example: Kangaroos fill the same niche as North American deer. etc.
Ecological Niches are much more specific than 'Mammal'. For instance, Bears fill the top predator niche in lots of alpine forest regions; while mice fill a seed-eating small-creature niche in the same ecosystem.
When two organisms fill the same niche, competition for resources will intensify. This can lead to one species outcompeting the other, resource partitioning where each species utilizes different resources, or evolutionary changes in one or both species to reduce competition. Ultimately, it can result in one species displacing the other or both coexisting through niche differentiation.
Opossum and rats can live together in the same place. They do not really interact with each other, and would leave each other to their own kind.
no they do not have the same niche but same habitat, so what?
Yes they do have the same niche
Europe was thriving with rabbits and had similar grasslands as Austrailia, yet Austrailia didnt have rabbits. He eventually observed rodents who had evolved to fit the same ecological niche.
No
No..
no, very similar genetic information. as you and i dont have the same genetic information do we? same ecological niche? well sorta, i wouldnt call it an ecological niche, the factors that make the niche such as temperature, humidity, host range would be the same.
If 2 mouse species tried to occupy the same niche they would fight. The mice fight to right to occupy the niche. The winner of the fight gets the niche.
I really suggest you don't( they could fight , or worse kill each other) I don't believe they can mate so if you do put them in the same cage don't expect babies... Species such as sugar gliders, which are marsupials, and hamsters, which are rodents, should never be mixed in the same cage. Their diet, behaviours and needs are vastly different.
how are otters and mice alike