ilium
chicken
because animals have more bones and they produce more
In a four-legged animal, the weight of the body would be distributed between the pelvic and pectoral girdles. In humans, the pelvis has to support the weight of the whole trunk.
The reason the pelvic bones, or the hip bones, of a four legged animal are less massive than those of a human is because in humans all of their weight is concentrated onto that one area of the body, and only onto two legs. But in four legged animals there are four legs to distribute the weight onto, thus the hip bone does not need to be as strong.
Lower pelvic arteries differ from human from those of a cat in many different ways from the way the cat and human can go through labor and how the human and the cat can carry the babies of kittens are very different.
each leg suppports less weight (because theres 4) so less space is needed for the bone
In one sense, since humans are animals, your brain does not differ from the brina of an animal. human brains, and those of the other great apes, do differ from those of other animals in size relative to body size. In addition, human brains have structured that some other animals, reptiles, for example, lack.
It is an animal trait and as humans are animals it is also a human trait. Only those who have a higher opinion of humans would try to deny the trait.
Pelvic inflammatory disease does not cause cancer. Having multiple sex partners is a risk for both cervical cancer and pelvic inflammatory disease, but even those who aren't sexually active can get PID.
Fish do not have "pelvic girdles" per se. Land animals in large majority have skeletal structures in their hips known as pelvic bones. In humans, men have a narrow pelvic size and women have a wider pelvic size. This is because women bear babies. The circular shape of these pelvic bones are referred to as the "pelvic girdle". Fish, however, don't have hip bones. Living in the water has eliminated the need for the extra physical support those bones would give during pregnancy. Since fish range in size from near-microscopic up to the immense whale shark, the equivalent to the pelvic area would vary greatly in size. Mammals too, range widely in size so comparison is difficult without a more specific question.
Animal and human mating is similar, particularly for those that are mammals. But different. It takes longer for us but shorter for them.
Not to be used by pregnant or lactating women or those with uterine inflammation or pelvic infection.