Why does the cat tremble when stroked? - briefly
The cat's trembling when stroked is often mistaken for shivering due to cold, but it actually indicates intense pleasure and excitement. This response, known as "petting-induced excitatory behavior," is characterized by rapid tail movements and a slight quivering of the body, signaling that the cat is highly content with the interaction.
Why does the cat tremble when stroked? - in detail
When a cat is stroked, it may appear to tremble or shake. This phenomenon is often referred to as "cat shivers" or "cat quivers." The underlying cause of this reaction is multifaceted and rooted in both physiological and behavioral aspects.
Firstly, the trembling can be a result of the cat's autonomic nervous system responding to the sensory input from being stroked. This system regulates involuntary body functions such as heart rate, digestion, and respiratory rate. When a cat is petted, particularly in areas they enjoy, such as the base of the tail or under the chin, it can trigger a surge of pleasurable sensations. The autonomic nervous system may respond to this intense stimulation by causing the muscles to twitch slightly, leading to visible trembling.
Secondly, the trembling can also be an indication of heightened emotional states in cats. Cats are known for their complex emotional range, and being stroked can evoke strong feelings of happiness or contentment. In some cases, this emotional response can manifest physically as a slight tremor. This is similar to how humans might feel a rush of emotion that causes them to shiver or experience goosebumps.
Furthermore, cats have specific glands known as scent glands located in various parts of their body, including the tail and cheeks. When these areas are stroked, it can stimulate the release of pheromones, which are chemical signals used for communication among cats. The act of releasing these pheromones can sometimes cause slight muscle contractions, resulting in visible trembling.
It is also worth noting that not all cat tremors are indicative of pleasure or happiness. In some cases, a cat may shiver due to stress, fear, or illness. It is crucial for pet owners to be attuned to their cat's body language and overall demeanor when determining the cause of the trembling. If the cat appears tense, has dilated pupils, or is attempting to escape the situation, it might indicate that the cat is not enjoying being stroked.
In conclusion, while a cat's trembling when stroked can often be attributed to pleasurable sensations triggered by its autonomic nervous system and emotional responses, it is essential to consider the cat's overall behavior and context to ensure that the interaction remains positive and enjoyable for both parties involved.