Yes. For example, Koala bears and Grizzly bears
the animals having same number of chromosomes but members of different species why?
animals
No they are two different species of animals.
Releasing pheromones is one of the ways animals and insects communicate with the other members of their species non-verbally. Pheromones influence the development or behavior of the other members of a similar species.
Members of the same or different species.
If there are no living animals or plants alive in a particular species, it is listed as extinct.
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No. Some other animals do that, but I never heard this about butterflies. If you see butterflies in many different colors, that's because you are actually seeing different species of butterflies. There are many thousands of species.
so the animals can mate and have kids
If they eat a different species - they are carnivores. If they eat the same species - they are cannibals.
No. Two animals of different species cannot breed.
Animals recognize members of their own species through various cues such as visual appearance, scent, vocalizations, and behavior. These cues help them identify and communicate with other individuals of the same species for mating, social interactions, and group cohesion.