Mohammed had a 9 year old bride, so it is not surprising that Islam teaches
this on sex with infants:

Dr. Homa Darabi Foundation,
Ayatollah Khomeini's Religious Teachings on Marriage, Divorce and
Relationships

"A man can marry a girl younger than nine years of age, even if the girl is
still a baby being breastfed. A man, however is prohibited from having
intercourse with a girl younger than nine, other sexual act such as
foreplay, rubbing, kissing and sodomy is allowed. A man having intercourse
with a girl younger than nine years of age has not committed a crime, but
only an infraction, if the girl is not permanently damaged. If the girl,
however, is permanently damaged, the man must provide for her all her life.
But this girl will not count as one of the man's four permanent wives. He
also is not permitted to marry the girl's sister."


Here's Khomeini's instructions on sex with animals:

Dr. Homa Darabi Foundation,
On sex with Animals

"If one commits an act of sodomy with a cow, a ewe, or a camel, their urine
and their excrements become impure, and even their milk may no longer be
consumed. The animal must then be killed as quickly as possible and burned,
and the price of it paid to its owner by him who sodomized it."