My favorite pets

GRAT

I have 1 pet. His name is GRAT. He is 2 years old, he is a boy. GRAT loves to play. He is very friendly.

His name means something. I have 3 brothers, their names are Raffi, Avet, Tigran. My name is Grigor.

Grigor
Raffie
Avet
Tigran
= G-Grigor
R-Raffi
A-Avet
T-Tigran =GRAT