When I was a child, my parents (who were always supportive of my interests) took me to the zoo (where I first fell in love with animals) every summer. The zoo, which was located on the outskirts of the city, had a wide variety of animals (that I had only seen in books before) including lions, elephants, and monkeys. I remember one specific trip (when I was eight years old) where I saw a baby gorilla being bottle-fed by a zookeeper. The sight of the tiny gorilla (that was no bigger than a human baby) clinging to the zookeeper's shirt and drinking milk from the bottle made a huge impression on me and solidified my desire to work with animals when I grew up.

Noun Clause: that I had only seen in books before

Adjective Clause: where I first fell in love with animals

Adverbial Clause: when I was eight years old