It's impossible to accurately count the number of animals in the Serengeti ecosystem: the park borders other conservation zones, and savanna residents freely leave and return to the Serengeti.
Here are some approximate numbers:
Elephants: according to the Tanzania Wildlife Research Institute (TAWIRI), the population in 2020 was about 7,000 individuals, up by a thousand from 2014.
Buffaloes: TAWIRI noted a population of 60,000 in 2020, an increase of 10,000 from 2014.
Lions: Britannica information indicates about three thousand individuals.
Great Migration animals: a research team led by Professor Alexandra Swanson from the University of Minnesota reported that the population of wildebeests, other antelopes, and zebras was 1.6 million in 2015.
The Altezza Travel team has visited nearly all national parks in Southeast Africa. We can confidently say that the safari experience in the Serengeti is truly unmatched due to its vast number of animals.