There are over 400 nuclear reactors around the world.
France has 56 nuclear reactors in operation. This makes France one of the countries with the highest reliance on nuclear energy in the world.
There are currently (year 2013) 31 countries having nuclear power reactors. The rest are not having nuclear power.
Most nuclear reactors are thermal-neutron reactors. A few fast breeder reactors have been built, but not many.
Sweden currently has 3 active nuclear power plants with 10 reactors.
As of 2021, there are 93 commercial nuclear reactors operating in 28 states in the United States. These nuclear reactors are spread across 56 nuclear power plants.
As of 2021, India has 22 operational nuclear reactors across seven nuclear power plants. India has plans to increase its nuclear energy capacity through the construction of additional reactors in the coming years.
As of 2021, there are around 440 nuclear reactors in operation worldwide. These reactors are used for generating electricity through nuclear fission reactions. The number of reactors changes over time due to construction of new reactors and decommissioning of old ones.
Nuclear reactors use nuclear fission.
I have put a link to the Wikipedia page, "List of nuclear reactors," below. It seems to be pretty good, and includes some reactors that are not in nuclear plants, such as research reactors.
There are 100 nuclear power reactors operating in USA besides five under construction as of July 2014.
Well, you don't let them near nuclear reactors, but, if it did happen, they would probably die of radiation. Anyway, not many animals are near nuclear reactors.
In nuclear reactors, there are over 400 operating power reactors world wide