Do bamboo toothbrushes harm pandas?

What giant pandas actually eat

Almost nothing but bamboo: by some estimates about 99% of their diet. But not just any bamboo. Of the more than 1,200 bamboo species in the world, pandas eat more than 60, and which ones depends on the mountain range and the elevation. In the Qinling Mountains they prefer Bashania fargesii and Fargesia spathacea.

A 2023 study across the mountain ranges where wild pandas live found that at most sites they preferred Bashania, Fargesia and Yushania bamboos. Pandas in two ranges, Minshan and Qionglai, also select Phyllostachys species, which is worth knowing because Moso, the main commercial bamboo, is a Phyllostachys too. That doesn’t mean pandas eat Moso; it means the genus alone doesn’t settle the question.

The “arrow bamboo” mix-up

Some seller pages say pandas rely on Pseudosasa japonica, calling it “arrow bamboo”. In the panda research we read, the bamboo called “arrow bamboo” is a native Chinese mountain species: in Wolong Nature Reserve, for example, the dominant panda foods are Bashania faberi, which researchers call arrow bamboo, and umbrella bamboo, growing mainly between about 1,700 and 3,500 m.

Pseudosasa japonica is a different plant, a bamboo traditionally used for arrows in Japan. It didn’t appear in any wild panda diet study we read, though captive pandas do eat it: in a Beijing Zoo trial it was one of three bamboos classed as preferred, on the four pandas’ combined intake. The arrow connection is probably where the mix-up comes from.

Where pandas live, and where Moso grows

China’s fourth national survey, with fieldwork from 2011 to 2014, counted 1,864 wild giant pandas, in Sichuan, Shaanxi and Gansu, about three-quarters of them in Sichuan.

Moso (Phyllostachys edulis) is the most economically important bamboo in China, with stems growing to 20 m or more. Moso forests make up about 70% of China’s bamboo area, mainly in southern China, in provinces such as Fujian, Jiangxi and Zhejiang. Its listed range does include Shaanxi and Sichuan, though, and we found no study measuring whether Moso plantations overlap panda habitat. So we wouldn’t repeat the line that it’s all grown far from pandas.

You may also read that pandas can’t reach Moso leaves because they start about 5 m up. We couldn’t find a source for that, and pandas don’t only eat leaves: the shoots of their staple bamboos matter in spring, for breeding.

What does threaten pandas

In 2016 IUCN moved the giant panda from Endangered to Vulnerable, crediting forest protection and reforestation, while warning that climate change is predicted to eliminate more than 35% of its bamboo habitat in the next 80 years. Researchers say human pressure is greater now than decades ago, largely from infrastructure, agriculture and tourism, and the fourth national survey found the wild population divided into 33 isolated groups. Bamboo itself is a risk too: many species grow for decades, then flower together and die, and those die-offs can take away panda habitat for years.

The one case we found of people competing directly with pandas for bamboo is local: communities harvesting the shoots of panda staple bamboos, mostly in April and May, which researchers link to local panda declines in the Liangshan Mountains. That’s shoot collecting in and around panda areas, not plantation bamboo made into goods.

And red pandas?

Red pandas are a separate animal with a similar diet: mostly bamboo leaves and shoots, across Nepal, Bhutan, northern India, northern Myanmar and south-west China. IUCN listed them as Endangered in its 2015 assessment. We found no study linking bamboo goods to red panda food either.

What this means for a bamboo toothbrush

• “Panda-friendly”. No study we found backs that claim for any bamboo product, and none contradicts it. Ask what it’s based on.
• The bigger questions are elsewhere. Most bamboo toothbrushes still have nylon bristles, and what happens to the handle at the end depends on where it ends up.

Where we fit

Our handles are bamboo too, with sterilised horse hair bristles woven into the head and no nylon or glue. This page is about bamboo in general, not our own supply, and we haven’t seen evidence that would let us call any bamboo brush panda-friendly, ours included.

The short version

• No study we found links bamboo goods to panda food, either way.
• Wild pandas eat native mountain bamboos, chiefly Fargesia, Bashania and Yushania.
• Moso, China’s main commercial bamboo, didn’t appear in the wild diet studies we read.
• The real threats are habitat loss, fragmentation, climate change and bamboo die-offs.