Three Month Old Kitten Size - Marketing World

News 12 Networks: Unique 3‑month‑old kitten with 24 toes finds new family A 3‑month‑old kitten with an unusual number of toes has found a new home after being adopted from a local animal shelter. The kitten, named Toes, has 24 toes, compared with the usual 18 most cats have ... Or possibly three times a quarter, which is monthly.

You can't redefine a quarter as a third, though. Three times a year is triannual — not triennial which is every three years. You could also say every four months; "every four months" is preferable because it removes the possibility of confusion between triennial and triannual.