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I believe this would be Krill, even though it is one of the smallest organisms, by weight, is THE most abundant on earth.

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16y ago

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What is the most abundant animal on earth by weight?

Humanity EDIT: This person is incorrect. In terms of species, Humans comprise about 100 million tonnes of the Earth's Biomass. In comparison, the Arctic Krill contributes probably 500 million tonnes. As an animal group, Copepods form the largest animal biomass on earth. Source: Wikipedia


What animal is there most of?

In terms of sheer numbers, the animal with the largest population on Earth is likely ants. There are estimated to be trillions of ants worldwide, making them one of the most abundant animals on the planet.


Would you feed an animal more fat if it is losing weight?

If the animal is eating regularly and it is still losing weight, you should probably take it to the veterinarian as it should not be losing weight. Otherwise, it depends on the animal. Most pets, particularly cats and dogs, gain weight when they are fed more cat or dog food.


Are insects the most abundant animals on earth?

The most populated animal more than humans are ants


What is the most abundant animal in the world?

Bacteria are the most abundant species on earth. Their total number cannot be exactly known, but estimate puts it at around 5 x 1030. There could be as many as one billion species. A link can be found below to the study and its results.Bacteria are not a species of life. They are a domain, which is the broadest classification of life. The most abundant domain on Earth is certainly bacteria and the most abundant species on Earth is likely a particular species of bacteria.