when do calves, cattle lose teeth?

[hersh]

Was cleaning out my hay feeder(oak bottom) and found a molar. I have 3 calve just weaned today at just under 7 month old, then I have 5 heifers at abot 30-34 month and a 28 month old bull. Who's tooth is it? I would hate to have this thing come lose in my mouth with the sharp spikes on the bottom.

 

[dun]

I think I was told around 18 months to 2 years. The way they shed those baby teeth isn;t like a tooth falls out and then one grows in. The new tooth is growing in uder the old one and pushes the baby tooth out.