Immature female horse, (under 3 or 4 years of age).
Young horse mare (female.)
Female horse 4 years old or younger.
(noun) A young female centaur.
Female horse 4 years and under that has never produced a foal.
a female horse under the age of four.
young (under 4 years) female horse
A female horse up to 4 years of age.
(animal science) A female horse less than three years old.
a female baby horse and used often in photo shoots to get pictures of a breeds baby horses
A female horse under the age of 4
Female horse aged four or less.
Female horse under five years old.
Female horse (3 years and under).
A female horse about to the age of 4.
A female 3 years of age or less.
a female horse until she is fully grown, which is generally taken as four years of age
a female horse up to and including the age of 4.
Female horse four-years-old or younger.
A female horse whose age is 4 or under.
a female horse under 5 years of age
Female horse under three years of age.
A female horse aged three or under.
A female horse three years of age or younger.
a young female horse who has not yet had a foal between the ages of birth and 4 years.
A female horse is called a FILLY up until her fourth birthday when she becomes a MARE.
A young female horse aged 3 years or younger.
a female horse under one year of age
Female horse, 3 years old or less
A female horse less than 5 years old.
A female horse, age three or under.
A young female horse not more than four years of age.
a young female horse under three years old.
Female horse up to three years of age
Female horse under four years old
A female horse up to five years of age.
A female horse, under five years of age. At five they are then called mares.
A female horse under 4 years old
Female horse up to four years old
A female horse under the age of 3 years.
Female horse 4 years old and younger.
A filly is a young female horse, too young to be called a mare. There are several specific definitions in use.