Is wool vegan, and is leather just a by-product?

The objection

“The animal was killed for meat anyway. The skin and the fleece are by-products, and using them prevents waste.”

The answer

The objection gets the economics half right. Most of what a slaughtered steer is worth is in its carcass, and in the US its hide now sells for about $24 (2026) [1]. But a hide exists only because the animal was killed, and the money paid for it goes to the business that killed it. Wool is shorn from living sheep, though they are not kept for life either.

Is leather just a by-product of meat?

Leather is a by-product in the sense that the meat earns most of the money, but by-products are sold, and the US Department of Agriculture prices them daily. Its report for 23 October 2026 put the hide of a typical 1,400lb slaughter steer at $24, and the hide and offal together, from tallow and tripe to tongues and blood meal, at $15.09 per 100lb of live weight, or about $211 a steer [1]. In the week to 18 October, steers that packers bought for cash from feedlots in five US regions averaged $224.19 per 100lb live [2], so the hide and offal brought back about 7% of what a steer cost, and the hide alone under 1%. That share is typical of the US beef trade, where the department’s Economic Research Service put by-products at 6% to 10% of what the cattle cost in each year from 2020 to 2025, and subtracts them from the animal’s price to reach the value of its meat [3]. No single leather purchase decides whether a steer is killed, any more than one steak does, but the hide and offal pay for part of every animal the packers buy, and it is demand added up across many buyers that sets how many animals are bred.

Is wool vegan?

Wool isn’t vegan. The Vegan Society defines veganism as a way of living that seeks to exclude, as far as is possible and practicable, all forms of exploitation of and cruelty to animals “for food, clothing or any other purpose” [4], and wool comes from breeds kept to grow it. Shearing is often presented as a favour to the sheep, and those breeds do need it: their fleece grows continuously, so they are typically shorn at least once a year, according to RSPCA Australia, an animal-welfare charity (2019) [5]. The breeding brings other problems with it. Some Merinos have woolly wrinkles and folds of skin that hold moisture and draw the blowflies behind flystrike, which can kill. To prevent it, RSPCA Australia said in 2025, millions of lambs in Australia are mulesed each year, with crescents of skin cut from around the breech and tail and no anaesthetic beforehand [6]. Most mulesed Merino wool now comes from sheep given pain relief afterwards: of the Merino bales offered at Australian auctions in 2025/26, 54.3% came from sheep declared mulesed with a pain-relief product and 6.4% from sheep mulesed without one, according to the Australian Wool Exchange, an industry body [7]. RSPCA Australia says that where pain relief is given it usually doesn’t last as long as the pain, and that mulesing is unnecessary in sheep bred to resist flystrike and appropriately managed [6].

Wool sheep are not kept for life. Australia’s Bureau of Statistics counted about 10 million sheep slaughtered there in 2025, on top of about 24.5 million lambs, though its figures don’t say how many had been kept for wool [8]. Selling sheep is built into the example farms used to train Merino breeders: in a 2008 course from Australia’s Sheep Industry Cooperative Research Centre, all three example wool farms in one exercise count the sale of older, “cast-for-age” ewes among their income, and one sells its young wethers to other farmers or to butchers [9].

Isn’t vegan leather just plastic?

A lot of vegan leather is plastic. Synthetic leather is a textile coated with PVC or polyurethane, and a 2026 review of the newer plant- and fungus-based materials found that many commercial versions still rely on petroleum-derived resins or coatings to last [10]. Those plastics have the same limited end-of-life options as most others, although animal leather is heavily processed too: the same review puts chrome tanning behind 85 to 90% of the world’s leather production [10]. On climate, a 2026 meta-analysis of life-cycle assessments put bovine leather at about 187kg of CO2-equivalent per kilogram of finished leather, more than twelve times the 14.9kg of the vegan leathers it covered [11]. Results like that depend on how much of the farm’s emissions is charged to the hide. A 2025 review of the question reports that a 2012 leather-industry panel of the UN Industrial Development Organization charged none, treating raw hides as waste that should reach the tannery with no footprint [12]. The review argued that hides, being sold, should carry a share, and found that dividing emissions by economic value gave them the smallest share of the methods it tested, about 2.7% for cattle slaughtered in Italy in 2023 [12]. The 2026 meta-analysis also shared out the farm’s emissions by economic value, using UN Food and Agriculture Organization livestock data, and its estimate for the farming stage alone came out more than double earlier ones [11].