did-you-kno: Almost all mammals take about 21   seconds to empty their bladders.   Scientists conducted in-depth studies   of different mammals peeing and   discovered that an animal’s mass,   bladder pressure, and urethra size all   work together

did-you-kno: Almost all mammals take about 21   seconds to empty their bladders.   Scientists conducted in-depth studies   of different mammals peeing and   discovered that an animal’s mass,   bladder pressure, and urethra size all   work together

tags: So many OTPs,

from: https://eikuuhyo.tumblr.com/post/180594974817