22/10/2026
Thank you Peek a Boo for providing a good opportunity to mention that nibbling in rats is a perfectly normal behaviour and it often signifies curiosity or the want to express companionship via grooming you, it is a communication tool they use between themselves to show affection, their minds are busy and curious so sometimes they’ll nibble to explore textures or where smells are coming from (and whether they taste any good 😉).
It can even be a sign of play or to get your attention so you interact with them..especially at the legs and feet which they seem to think is funny when you react.
All completely normal as they do this between themselves.
Acrylic nails definitely seem to be a trigger with a lot of rats also, they probably know it doesn’t belong there and the smell can be weird 😅
Understandably it can at times be a little too hard or even annoying in which case you can simply remove your hand/feet and encourage them to chew something more appropriate like wooden chew toys (bird & rabbit toys are typically safe for rats) or divert their attention to another activity.
Rats are curious by design and problem solving should be encouraged by providing chew based enrichment which also helps wear down their teeth (rats teeth continuously grow as they are in the rodentia family which this is a core trait of).
Gentle nibbling is not a cause for concern and it is in no way aggressive behaviour nor does it mean it will escalate into aggressive behaviour.
Nipping (not drawing blood) on the other hand can be boundary testing, anxiety, fear, frustration driven or encouraged behaviour from feeding treats via the bars of the cage so they learn fingers = snacks, this isn’t necessary their fault and can be corrected by learning your rats triggers.
Biting and drawing blood is extreme and is aggression or fear based, it is often genetic and something good breeders breed away from.
If you encounter this behaviour it’s important to understand where it’s coming from and if there’s anything you can do to help reduce it.
Sometimes it’s due to hormonal aggression and desexing can help, it can also be due to pain or illness in which case the rat is desperately trying to communicate with you.
It should not be a common behaviour and in some cases it is dangerous, just like with any animal bite it’s important to seek medical attention.
Knowing this is extremely important for understanding the differences in rat behaviour and the root cause of it so you and your rats can have a fulfilling relationship together.
I think at times over the years parts of the community can be too harsh with behaviours that are normal and it’s sometimes been sad to see so hopefully the above can help people have a little more empathy for these beautiful animals we’ve chosen to be part of our lives.
