der Igel
hedgehog
A small nocturnal mammal with a coat of spines that rolls itself into a ball when in danger.
Im Herbst hat ein Igel in unserem Garten überwintert.
In the fall, a hedgehog hibernated in our garden.

hedgehog
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hedgehog
A small nocturnal mammal with a coat of spines that rolls itself into a ball when in danger.
Im Herbst hat ein Igel in unserem Garten überwintert.
In the fall, a hedgehog hibernated in our garden.

The three meanings of 'Igel' (hedgehog/IGeL service/spiky haircut) are very different and become clear from context. If it is about the garden or animals, the mammal is meant. In a conversation with a doctor, it refers to the health service. At the hairdresser's or in the context of appearance, it refers to the hairstyle.
Vorsicht, da läuft ein Igel über die Straße!
Careful, there's a hedgehog crossing the road!
A characteristic behavior of the animal is often described with the verb 'sich zusammenrollen' (to roll oneself up). When a hedgehog is afraid, it rolls itself into a ball to protect itself with its spines.
Als das Auto kam, hat sich der Igel schnell zusammengerollt.
When the car came, the hedgehog quickly rolled itself up.
In a medical context, 'Igel' (or 'IGeL') is an acronym. It stands for 'Individuelle Gesundheitsleistung' (individual health service). These are medical services that you have to pay for yourself.
Mein Arzt hat mir eine professionelle Zahnreinigung als IGeL empfohlen.
My doctor recommended a professional teeth cleaning to me as an IGeL service.
The hairstyle is called 'Igel' (hedgehog) because the short hairs standing upward are reminiscent of a hedgehog's spines. This visual comparison helps you remember the meaning.
Mit seinem neuen Igel sieht er viel jünger aus.
With his new spiky haircut, he looks much younger.