Rex
Rex is a popular, male-leaning dog and cat name with measured register data, spelling facts and similar names from the catalogue.
Rex scores 9/10 on this catalogue's popularity scale, built from the open pet-name registers behind it, recorded for dogs and cats. The sexed sample leans male. The spelling has 3 letters and 1 syllable, giving it a strong shape for calling. The counted source countries for this row are United States, Canada, Switzerland and Australia.
The name means “King”, which gives it a warm story to tell at the vet, the park or the groomer.
Short names with a clear vowel structure are easier for animals to distinguish from everyday speech — Rex does exactly that, which makes recall training noticeably smoother.
Owners most often choose Rex for dogs, cats. Browse the related cards below if you would like more names in the same royal mood.
Questions about Rex
Is Rex a dog or cat name?
Rex is recorded for dogs and cats in the open registers counted by this catalogue. This reports the current sources; it does not claim the name is unused elsewhere.
How popular is Rex?
Rex scores 9/10 on this catalogue's popularity scale, which makes it popular here.
Is Rex male or female?
The sexed records that meet the catalogue threshold lean male for Rex.
What does Rex mean?
Rex is stored with the sourced meaning "King".
What names are similar to Rex?
Similar catalogue names include Max, Rocky, Ruby, Rosie.
How common is the name Rex?
On this catalogue's 10-point popularity scale — built from the open pet-licence and shelter records it counts across the United States, Canada, Switzerland and Australia — Rex scores 9/10.
Names with a similar feel
Popular ways to browse
Popular pet names
Names that feel familiar, easy to call and broadly loved.
Pop culture pet names
Names borrowed from films, games, music and comics.
Female cat names
Elegant and playful choices for queens of the sofa.
Unique unisex names
Rare names that work for any pet and feel a bit more original.