A dead cat bounce typically lasts a few days to a couple of weeks, though it can extend to several months depending on the severity of the underlying decline.
A dead-cat bounce is more of a quick market reflex that typically runs its course in a few days or a couple weeks, whereas a bear market rally can continue for weeks or months.
Depending on the severity of the problems affecting the business, it could last anywhere from a few weeks to several months.
Many veteran chart-watchers look for a dead-cat bounce to stall out around 25% or 30% above the low price of the previous decline.