Primates
1. _Bonobos_: Known for their high levels of sexual behavior, bonobos engage in same-sex interactions.
2. _Chimpanzees_: Some chimpanzees have been observed engaging in same-sex behavior.
3. _Gorillas_: There have been observations of same-sex behavior among gorillas.
4. _Orangutans_: Some orangutans have been observed engaging in same-sex behavior.
5. _Capuchin Monkeys_: Some capuchin monkeys have been observed engaging in same-sex behavior.
Carnivores
1. _Lions_: Male lions have been observed engaging in same-sex behavior.
2. _Tigers_: There have been observations of same-sex behavior among tigers.
3. _Leopards_: Some leopards have been observed engaging in same-sex behavior.
4. _Cheerful Dolphins_: Male dolphins have been seen engaging in same-sex behavior.
Ungulates
1. _Giraffes_: Male giraffes have been observed engaging in same-sex behavior.
2. _Sheep_: Some sheep have been observed engaging in same-sex behavior.
3. _Goats_: Male goats have been observed engaging in same-sex behavior.
Marsupials
1. _Kangaroos_: Some kangaroos have been observed engaging in same-sex behavior.
2. _Wallabies_: Male wallabies have been observed engaging in same-sex behavior.
Cetaceans
1. _Orcas_: Female orcas have been observed engaging in same-sex behavior.
2. _Sperm Whales_: Male sperm whales have been observed engaging in same-sex behavior.