yes they do because they bleed
Animals' gender is no different than a humans'. Animals can be male and female, just like we are.
Humans are animals
Like humans, most animals are either male or female, although some are hermaphroditic, having reproductive characteristics of both genders.
Marine animals.
not like humans but they do respiration but how do they respire then ?
No. Horses go into estrous, they do not menstrate like human women do.
No i believe they do not cause humans get oxygen from trees animals really are not different from humans so animals get the oxygen from trees just like humans
mammals
yes. They have periods like we do.
they cause siknness to humans animals
Actually, humans are counted as animals, humans aren't the main living things on earth. Humans are mammals, just like the other breathing, furry, animals out there.
Animals don't enjoy attacking humans. Most of the time they attack out of defense or hunger.