thanks for the complements! We're not sure of Boo's exact age, but we've had her for a little over 4 years now and she was probably about 3 when we adopted her. That would put her at about 7 years old.
She's not a spring chicken, but she's definitely not a senior yet! Her muzzle is steadily getting whiter and helping out her distinguished look.
The day we brought her home 4+ years ago: