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There were, however, other early and more reliable studies on number sense in animals. A prominent example is the work of Otto Koehler, who conducted a number of studies on number sense in animals between 1920s and 1970s. [4] In one of his studies [5] he showed that a raven named Jacob could reliably distinguish the number 5 across different ...
The following are lists of animal diseases: This list is incomplete; you can help by adding missing items. (February 2021) List of aquarium diseases;
direct contact with infected animals Creutzfeldt-Jacob disease: PrP vCJD: cattle eating meat from animals with Bovine spongiform encephalopathy (BSE) 1996–2001: United Kingdom. Crimean–Congo hemorrhagic fever: Crimean-Congo hemorrhagic fever orthonairovirus: cattle, goats, sheep, birds, hares
This list of dog diseases is a selection of diseases and other conditions found in the dog. Some of these diseases are unique to dogs or closely related species, while others are found in other animals, including humans.
List of endocrine diseases; List of eponymous diseases; List of eye diseases and disorders; List of intestinal diseases; List of infectious diseases; List of human disease case fatality rates; List of notifiable diseases – diseases that should be reported to public health services, e.g., hospitals. Lists of plant diseases; List of pollution ...
This is a list of infectious diseases arranged by name, along with the infectious agents that cause them, the vaccines that can prevent or cure them when they exist and their current status. Some on the list are vaccine-preventable diseases .
Articles about diseases and disorders which affect animals also. Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large.
In non-human animals, number sense is not the ability to count, but the ability to perceive changes in the number of things in a collection. [5] All mammals, and most birds, will notice if there is a change in the number of their young nearby. Many birds can distinguish two from three. [6]