They can distinguish people they know even when its been a while between visits, they can retrace paths they've taken before, they remember where they've stored food stashes, and they can be trained to respond in certain ways - ie coming when they're called. How much of that is repetitive training impressing instinct and how much of it is actual think about it remembering is anyone's guess. But they do definitely learn and apply those lessons throughout their lives.
Hamsters commonly do not have long memories. A typical hamster can only remember something for a few hours, although some would argue that hamsters can remember certain things their whole lives.
1.5-2 years
Yes and a long term memory too.
It depends on the human's memory strength.
They have an extremely long memory span. Donkeys can remember things for their entire lifetimes and often show this by behaving in specific ways.
A finch's memory span is within a couple of months.
456 years
the normal memory span for a person is about 30 years
It depends on the hamster (:
Sharks have been shown to exhibit long-term memory capabilities, with some studies suggesting they can remember information up to several years. However, the exact duration of a shark's memory span can vary depending on the species and the specific context.
It actually has a memory span of a month. I read this in a book. Don't blame me if it is wrong. This is because a goldfish always recognizes it's owner, knows when it should be fed. It only has the attention span of 3 seconds.
A cat's memory span is typically around 16 hours, which is relatively short compared to other animals. Some animals, like elephants and dolphins, have much longer memory spans that can last for years.