Mon animal est marron / brun
the way you say "i have a pet cat" in French is "J'ai un chat"
The words you want are Brun or Marron
The word "pet" can be translated as "animal de compagnie" in French.
pet. pronounce like Pay.
brun rouille
ma un chien
You can say "animaux de compagnie" in French to refer to house pets.
Marron
roux
Il est marron
Il a des yeux brun. English translation: he has brown eyes.
To say your pet's name in French, you can simply use the name as it is pronounced in English, since most names do not change. For example, if your pet's name is "Buddy," you can say it just like that in French.