I guess i will start at the oldest to youngest .

Penny (JRT x) will be turning 9 on the 25th of december.
Clover will be turning 8 on the 26th of October.
Theodore (Chi) will be turning 4 in July sometime.
Elvis and Tinny will be 3 on the 13th of October .

*Cough* And the cat will be turning 7 on the 14th of November. *cough* (Funny looking dog i know .