Les garçons ont un chat.
"Un chat gris, is how you say gray cat in french
the way you say "i have a pet cat" in French is "J'ai un chat"
Neon cat
'français'
The Cat Story in French is "L'histoire De Chat"
"Small cat" in French is Un petit chat.
A Persian cat is "un chat persan" in French.
"The skinny cat" is "le chat maigre" in French.
As there is no tense in the French language in which you can say "the boys are playing" the closest you can do is say that "the boys play" which translates to "Les Garçons jouent" or "Les Jeunes jouent"
"J'ai un chat" means 'I have a cat' in French. "Vous avez un chat" means 'You have a cat' in French.
Mon Chat is my cat
you say chat