
The Tauros Programme, formerly known as TaurOs Project, is a cooperation between the Dutch foundation
Stichting Taurus and universities such as the
Wageningen University and Research Centre. It is an international effort to breed a type of cattle that resembles the extinct
aurochs
The aurochs (''Bos primigenius''; or ; pl.: aurochs or aurochsen) is an extinct species of Bovini, bovine, considered to be the wild ancestor of modern domestic cattle. With a shoulder height of up to in bulls and in cows, it was one of t ...
, the wild ancestor of domestic cattle.
The project largely uses hardy cattle breeds with superficial resemblance to the extinct aurochs. By
crossbreeding
A crossbreed is an organism with purebred parents of two different breeds, varieties, or populations. A domestic animal of unknown ancestry, where the breed status of only one parent or grandparent is known, may also be called a crossbreed though ...
and
selective breeding
Selective breeding (also called artificial selection) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits (characteristics) by choosing which typically animal or plant m ...
it tries to establish similarity to the aurochs. The long-term goal is to release these Tauros cattle into
rewilding areas.
The project was founded in 2008, and the actual breeding program started the following year.
Background
In line with the
wood-pasture hypothesis, herbivorous
megafauna
In zoology, megafauna (from Ancient Greek, Greek μέγας ''megas'' "large" and Neo-Latin ''fauna'' "animal life") are large animals. The precise definition of the term varies widely, though a common threshold is approximately , this lower en ...
are considered important tools of
nature conservation in maintaining the biodiversity of open or park-like landscapes without human interference. Therefore, it is planned to reintroduce large game in several reserves to recreate the natural dynamics of the European ecosystems. The aurochs was one of the most important European
ungulate
Ungulates ( ) are members of the diverse clade Euungulata ("true ungulates"), which primarily consists of large mammals with Hoof, hooves. Once part of the clade "Ungulata" along with the clade Paenungulata, "Ungulata" has since been determined ...
s but was hunted to extinction over most of Europe in the Middle Ages. Despite attempts at conservation, the last known pure-bred aurochs died in
Jaktorów Forest, Poland in 1627. Thus, so-called
rewilding has to work with its
domesticated
Domestication is a multi-generational mutualistic relationship in which an animal species, such as humans or leafcutter ants, takes over control and care of another species, such as sheep or fungi, to obtain from them a steady supply of reso ...
descendants, of which several breeds are hardy and robust enough to fill this gap. In many grazing projects, especially in
Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
,
Heck cattle are used, together with
Galloway
Galloway ( ; ; ) is a region in southwestern Scotland comprising the counties of Scotland, historic counties of Wigtownshire and Kirkcudbrightshire. It is administered as part of the council areas of Scotland, council area of Dumfries and Gallow ...
s and
Highland cattle. Heck cattle originated in the 1920s as an attempt by
Lutz and
Heinz Heck to breed an aurochs look-alike from several cattle breeds. Heck cattle turned out to be a hardy breed, but are found to be considerably different from the aurochs in several aspects.
The Tauros Programme is one of several
breeding back
Breeding back is a form of artificial selection by the deliberate selective breeding of domestication, domestic (but not exclusively) animals, in an attempt to achieve an animal breed with a phenotype that resembles a wild type ancestor, usually ...
attempts. This is based on the idea that original features of the aurochs are still present in some less-derived cattle breeds and can be reunited by crossbreeding and selective breeding. Stichting Taurus has been running grazing projects with hardy cattle and horses for years and purchased cattle breeds they consider to be useful for the project from southern Europe.
Methods and goal
The tauros programme uses very hardy cattle breeds, which should preferably resemble the aurochs to a useful extent. Crossbreeding and selective breeding with such breeds should create new lineages which are hoped to come close to the aurochs as much as possible and are fit for being released in European wild reserves. Not only the phenotype and robustness are in the focus of breeding, but also genetic information of the aurochs which might be preserved in these breeds is considered.
There are variations within each breed, so selection criteria are necessary to select the individuals to be included on the project. Accordingly, studies are running parallel under the umbrella of the project, e.g., to evaluate possible
introgression
Introgression, also known as introgressive hybridization, in genetics is the transfer of genetic material from one species into the gene pool of another by the repeated backcrossing of an interspecific hybrid with one of its parent species. Introg ...
of wild aurochs into the European cattle population. Furthermore, the food choice and behaviour of the used breeds are examined.
The breeds which are used for crossbreeding mostly stem from the
Iberian Peninsula
The Iberian Peninsula ( ), also known as Iberia, is a peninsula in south-western Europe. Mostly separated from the rest of the European landmass by the Pyrenees, it includes the territories of peninsular Spain and Continental Portugal, comprisin ...
and
Italy
Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...
. For example, these are
Sayaguesa Cattle,
Pajuna Cattle, Italian
Podolica and
Maremmana primitivo. Although claimed to be genetically close to the aurochs, the
Lidia breed (Spanish fighting bull) was not used for the project due to its aggressive behaviour.
These primitive breeds have decreased in numbers during the last decades, and some are highly endangered. Scottish
highland cattle are used as well, because this breed has a long and dense coat and is very hardy. Several cross individuals have been born already.
Members of the project hope that the Tauros cattle will one day be able to move freely in wild herds in European nature areas just as
red deer
The red deer (''Cervus elaphus'') is one of the largest deer species. A male red deer is called a stag or Hart (deer), hart, and a female is called a doe or hind. The red deer inhabits most of Europe, the Caucasus Mountains region, Anatolia, Ir ...
,
wild boar
The wild boar (''Sus scrofa''), also known as the wild swine, common wild pig, Eurasian wild pig, or simply wild pig, is a Suidae, suid native to much of Eurasia and North Africa, and has been introduced to the Americas and Oceania. The speci ...
, and
wolves
The wolf (''Canis lupus''; : wolves), also known as the grey wolf or gray wolf, is a canine native to Eurasia and North America. More than thirty subspecies of ''Canis lupus'' have been recognized, including the dog and dingo, though gr ...
do.
It is claimed by the project that the genetic relationship between a number of cattle breeds and the aurochs is examined.
Breeds in use and present crossbreeding results

The following robust cattle breeds are presently used:
*
Sayaguesa Cattle
*
Maremmana primitiva
*
Pajuna Cattle
*
Limia Cattle
*
Maronesa
*
Podolica
*
Highland Cattle
*
Tudanca Cattle
*
Boškarin
All breeds except Boškarin are being used for breeding in the Dutch herds. Outside of the Netherlands, mainly Sayaguesa, Maremmana, Maronesa and Boškarin are being used as founding breeds, supplemented by crossbreeds from the Dutch sites.
[Rewilding Europe]
“Tauros Programme.”
Continually updated webpage w/o date. Retrieved 23 February 2017. By the end of 2015, over 150 animals of the founding breeds have been used in breeding, and almost 300 cross animals have been born, among them 17 animals already of the fourth cross-generation.
Locations
*Netherlands: In
Keent Nature Reserve (
Oss),
Kempen~Broek (
Weert
Weert (; ) is a Municipalities of the Netherlands, municipality and city in the southeastern Netherlands located in the western part of the Provinces of the Netherlands, province of Limburg (Netherlands), Limburg. It lies on the Eindhoven–Maas ...
),
Herperduin-Maashorst (
Oss/
Uden),
Kraaijenbergse Plassen (
Cuijk),
De Maurik (
Mill
Mill may refer to:
Science and technology
* Factory
* Mill (grinding)
* Milling (machining)
* Millwork
* Paper mill
* Steel mill, a factory for the manufacture of steel
* Sugarcane mill
* Textile mill
* List of types of mill
* Mill, the arithmetic ...
), and
Geuzenbos (
Rotterdam Harbour).
[Stichting Taurus]
“Terreinen.”
Retrieved 1 September 2016. [The Tauros Programme]
“Locations. Where to meet the Tauros.”
Retrieved 1 September 2016.
*Portugal: Since 2013 in
Faia Brava.
[Rewilding Europe]
“Western Iberia. Achievements to date.”
Retrieved 1 September 2016.
*Spain: Since 2013 in
Campanarios de Azaba.
*Croatia: Since 2014 in the
Lika plains at the foot of the
Velebit Mountains.
[Rewilding Europe]
“Velebit. Achievements to date.”
Retrieved 1 September 2016.
*Czech Republic: Since 2015 in
Milovice Nature Reserve and since 2018 in
Modrá.
*Romania: Since 2015 in
Sfântu Gheorghe (
Danube Delta
The Danube Delta (, ; , ) is the second largest river delta in Europe, after the Volga Delta, and is the best preserved on the continent. Occurring where the Danube, Danube River empties into the Black Sea, most of the Danube Delta lies in Romania ...
).
[Rewilding Europe]
“Danube Delta. Achievements to date.”
Retrieved 1 September 2016.
Incident
In 2014 a mountaineer was killed in the
Velebit Mountains by a
Sayaguesa bull that was part of the project. The bull was later euthanized.
See also
*
Breeding back
Breeding back is a form of artificial selection by the deliberate selective breeding of domestication, domestic (but not exclusively) animals, in an attempt to achieve an animal breed with a phenotype that resembles a wild type ancestor, usually ...
*
Uruz Project
References
External links
* / {{Official website, http://www.taurosprogramme.com/, Official website 2
Projects established in 2008
Cattle breeding
Ecological experiments
Extinction
Aurochs