While it is true that not all animal species experience multiple births frequently, such as cows and elephants, the number of offspring in a single birth is influenced by various factors. Generally, species with more challenging pregnancies and births, as well as helpless newborns, tend to have fewer offspring per birth.

Comparatively, the human body is indeed different from other animals when it comes to childbirth. The human anatomy may pose certain challenges during the birthing process, especially considering the relatively large size of the human brain in relation to the birth canal. This can sometimes make childbirth more difficult for humans compared to animals like cats.

It is important to recognize the diversity in reproductive strategies and adaptations among different animal species. Each species has evolved its own unique mechanisms to ensure the survival of their offspring, and these adaptations can vary greatly depending on the specific needs and circumstances of each species.