原生动物

原 = 厂 + 自 + 小 : Mnemonic symbol: I like how 原子, literally "original seed", means "atom". I'll represent 原 by 原子弹, an atomic bomb.

原 = 厂 + 自 + 小 : In the anthill's kitchen Yu the Great is modding a chocolate factory into a nuclear chocolate factory by powering it with an atomic bomb. Because it is hard to look inside the bomb through it's small opening, she uses a hand mirror to see inside and connect the wires. She also used a lot of daisies to decorate the bomb and underline her peaceful intentions.

原 = 厂 + 自 + 小 : Mnemonic symbol: I like how 原子, literally "original seed", means "atom". I'll represent 原 by 原子弹, an atomic bomb.

原 = 厂 + 自 + 小 : In the anthill's kitchen Yu the Great is modding a chocolate factory into a nuclear chocolate factory by powering it with an atomic bomb. Because it is hard to look inside the bomb through it's small opening, she uses a hand mirror to see inside and connect the wires. She also used a lot of daisies to decorate the bomb and underline her peaceful intentions.

生 = 牛 + 一 : Mnemonic symbol: a cradle.

Sherlock Holmes (sh) comforts a crying baby bull (牛) in a cradle (生) in front of the engine ((e)ng1) and plays him a tune on a flute (一).

动 = 云 + 力 : Doggy Dog notices a lot of smoke when he enters engine's bathroom. Instead of thinking long, he acts quickly and moves to push the fire alarm button.

物 = 勿 + 牛 : Willy Walrus (w) wants to become a physicist (物) and does research about dark matter (物) in the space station's bathroom (Ø4). His motivation is to become a super villain and rule the world. Just as he is about to have a breakthrough, a huge black ox (牛) flying with the help of bat wings (勿) hits Willy with an oxerang and takes away the dark matter, saving the world.