jt, I would just add a few comments to the other correct responses you received: you or your accountant can really fine tune your depreciation deductions if you deem it to be appropriate and "tax-wise" under your particular circumstances. You can consider taking Section 179 depreciation on anything from zero to 100% of your otherwise qualifying property additions (it is not an "all or none" situation); you can consider using straight line depreciation rather than the faster allowable rates; you can consider depreciating cattle over 7 years, rather than 5, if you elect under the ADS depreciation system. Fine tuning of that sort could be appropriate in many situations and is certainly more preferable than simply not claiming depreciation on certain animals, since the previous posters were correct in mentioning the "allowed or allowable" rule. Note that you do not claim depreciation on animals purchased for resale (i.e. inventory), nor on animals not yet placed in service by the end of the year because they are too young to be of breeding age. Get with a CPA that knows farm & ranching tax rules