Feeding & Nutrition

Clover was fifteen and had spent most of those years ignoring the red fence post at the far corner of the lower pasture, the one the previous owner had painted years ago and never repainted. Then one dry summer she started licking it. Not a casual lick, a committed one, tongue working at the weathered wood like she was trying to get the last bit of something off a spoon, the way a kid goes at a popsicle stick. I noticed because she'd left a dark, damp patch on the wood that caught the light.

At first I thought it was boredom. She's a retired pony, a small Welsh cross with a thick neck and a patient eye, and the summer heat had her standing in the shade doing very little, switching her tail at flies and watching the field with the calm of an animal with no schedule left. But the licking got worse. The post went shiny where her tongue had been, and she'd trail the fence line looking for the next spot to work on, testing each post and rail like a connoisseur sampling wine. That's when I called the vet, because a horse eating wood is rarely just a quirk, and at her age I didn't want to guess.

What the wood-licking meant

The vet asked the obvious question first, the one I should have asked myself: is she getting minerals? Clover was on good hay and a measured grain ration, and I'd assumed that covered it, the way you assume a balanced label means a balanced horse. It didn't. The hay that year had been cut late, after a wet spring, and was a bit stemmy and lower in the trace minerals a senior horse quietly burns through, especially salt, which she lost in the summer sweat and never got back. She wasn't hungry. She was deficient, and the fence post, with its weathered splinters and mineral traces from the soil, tasted like the salt and minerals her body was missing.

We put a salt block in her stall and a mineral block out in the pasture, the kind with the little tabs of copper and zinc pressed in. Within a week the fence-licking stopped. The post dried out and went back to being just a post, red and ignored. Clover would lean into the block instead, tongue slow and satisfied, the way she used to go at a carrot before her teeth got long and the vet started soaking them. She'd stand there for minutes, eyes half closed, and I'd catch myself smiling at the relief of it.

I learned two things that summer that I wish I'd known a decade earlier. First, wood-chewing and fence-licking in horses is often a cry for salt or minerals, not a behavioral problem to be trained away with bitter spray or scolding. You can't scold a deficiency out of a pony, and the sprays just make the wood taste bad without fixing the want underneath. Second, hay quality swings year to year depending on the cut and the weather, and a ration that was perfect last season can fall short this one without anyone changing a thing. The block cost less than a single vet visit, and it fixed in days what I'd been puzzling over for weeks.

She's on the block year-round now, salt in summer when she sweats it out by the bucket, mineral in winter when the hay is lean and the grass is gone. The lower pasture fence is still red, still weathered by the same weather that faded it, and completely ignored. Clover has better things to lick, and I have one less thing to worry about when the dry months come around again.

The farrier noticed the change too on his next visit, commented that her coat looked better and her interest in the post had clearly gone. He's been coming twice a year for longer than I've owned her, and he trusts the block more than I do some days. I watch her at dusk now, head down at the mineral block in the pasture, and it's a different animal from the one who spent that summer with her tongue on the fence. Cheap fix, early lesson, and she's none the wiser about how close I came to treating a mineral gap like a personality flaw.

The vet's broader advice stuck with me longer than the block itself. She said senior horses are the ones most likely to fall short on minerals precisely because their owners assume the old routine still works, and the signs are quiet until wood starts disappearing. I now check Clover's block monthly and replace it before it's licked flat, and I glance at the fence line every time I walk the pasture, just in case a red post starts to shine again. Catching a deficiency early is the whole game with an old pony.