How long does crypto last in cats?

I'm curious, could you clarify the context of this question? Crypto, as we typically understand it, refers to cryptocurrencies like Bitcoin or Ethereum, which are digital assets used for financial transactions. However, it seems like you're asking about the duration of some form of "crypto" in cats, which isn't a standard use of the term. Assuming you're asking about some kind of medication, treatment, or substance related to cats and it's been colloquially referred to as "crypto," it's important to note that the longevity of any substance in an animal's body can vary greatly depending on several factors, such as the animal's size, age, health, and the specific substance in question. Without more context, it's difficult to provide a definitive answer to your question. If you're concerned about a specific situation with your cat, I recommend consulting with a veterinarian who can provide personalized advice based on your cat's specific circumstances.