<div dir="ltr"><div>"A mysterious neurological disease in young Californian black bears (<em>Ursus americanus</em>) is making them behave like pet dogs, cozying up to humans in a friendly manner.<p>Though it sounds cute, this abnormal behavior dramatically worsens the bears' chances of surviving in the wild.</p><p>The <a href="https://www.livescience.com/27647-bears.html"><u>bears</u></a>,
which are all around 1 year old, appear to be suffering from a form of
infectious encephalitis — inflammation of the brain tissue that can be
caused by <a href="https://www.livescience.com/53272-what-is-a-virus.html"><u>viruses</u></a>, <a href="https://www.livescience.com/51641-bacteria.html"><u>bacteria</u></a>, <a href="https://www.livescience.com/53618-fungus.html"><u>fungi</u></a>
and parasites, as well as part of an autoimmune response. But
veterinarians are unsure exactly what is causing the problem or how fast
it is spreading among the population." <br></p>
</div><div><a href="https://www.livescience.com/mystery-disease-fearless-californian-bears.html">https://www.livescience.com/mystery-disease-fearless-californian-bears.html</a></div></div>