What wicked custom is practised by animals by who live in groups ?​

cannibalism

Explanation:

a common practice amongst certain animal species is cannibalism, this usually occurs when there is not a sufficient food supply available nor present, but the ones who are eaten are mostly the "inferior" ones while the one who consumes their own, grows in a sense "stronger" via physical strength

in short: they eat one another when there is no food and the one who eats the weak grows physically stronger

the use of “as” in the example to draw the resemblance. some more examples of common similes are given below. common examples of simile. our soldiers are as brave as lions. her cheeks are red like a rose. he is as funny as a monkey. the water well was as dry as a bone. he is as cunning as a fox. simile introduces vividness into what we say.

motion can be transfered from one object to another by having an objetct in motion push or hit it