It exists in many organs in vertebrae:
• It is present in fish gills to aid oxygen absorption from the environment.
• In humans, it is present in the kidney around the loop of Henle to aid in ion exchange.
• It is also present near the human testes to cool it down and keep sperms viable. In this case it is called pampiniform plexus.

The most important location of the rete mirabile is in the base of the brain of many mammals (like dogs, cats, and sheep).
This is especially significant because, there, the hot arterial blood from rete mirabile runs very close to the cold venous blood in the cavernous sinus. This forms a heat-exchange unit where the arterial blood supplying the brain gets cooled down, and therefore, helps save the brain from overheating.

That's why dogs pant: because panting means that more air is entering the nasal cavity. This air cools down the blood in the nasal mucosa, which travels via the veins to the cavernous sinus. There, this "cold" blood absorbs excessive heat from the brain (from the rete mirabile, exactly) and this cools down the brain.

This is a sheep's rete mirabile (referred to as "carotid rete" on the right side).

Cat's rete mirabile (carotid rete)

Dog's rete mirabile along with turbinate bones which help cool the air in the nose and send it to the cavernous sinus (to cool down the brain).

In humans, the intracranial rete mirabile exists only in rare pathological cases where the original blood vessel is hypoplastic, or absent altogether. It is reported involving the internal carotid, vertebral and posterior cerebral arteries.

It's all Galen's fault

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"Bajadères in Cairo" by Alberto Fabbi

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حلوة الـ language science والزهرة :")

Every sound in every spoken human language

This is the IPA (International Phonetic Alphabet)

It gives every sound in the language a certain symbol. For example: the «sh» sound in «ship» and the «s» sound in «sugar» are given the same symbol, that is [ ʃ ] because they sound the same, even though they are spelled differently.

It's basically the musical score of the instrument we call "the human voice."