The neuter pronoun 'they' is commonly used as a singular gender-neutral pronoun.
neuter animal
Frequency:
45
%
The shelter took in a neuter animal that needed a home.
neuter surgery
Frequency:
35
%
The vet performed a neuter surgery on the stray cat.
Idiomatic Expressions for neuter
Phrase: neuter a pet
Meaning: to surgically remove the reproductive organs of an animal to prevent breeding
Usage: It's important to neuter your pet to help control the pet population and prevent unwanted litters.