Sounds like you have an exceptionally tame one. That is awesome considering some of the extremes that you see. No two animals are the same. I'm not sure what you're concerned about. If you have any questions feel free to ask.
Do be careful about the plastic parts in your chin's cage if you are using the one shown in the photo. If you notice your chinchilla is chewing on the plastic it's time to look into getting an all-metal cage because it can chew through it and escape in a matter of minutes if it wants to. Also plastic can be dangerous to chinchillas if ingested.
Here are some tips that I think are important for new chin owners that I've picked up that are life and death kind of tips that some have learned the hard way. This is not a complete care guide- just a list of things that have had bad consequences for chin owners.
-Be especially careful to keep your chin feeling calm and safe the first month you have it. There will be relocation stress and it can make your chin sick.
-Carefully observe the droppings for abnormalities. Liquid poo or no poo indicates a potentially deadly sickness. Green poo or small poo usually happens prior to this.
- Keep chinchillas in room temperatures below 75 degrees at all times and out of any direct sunlight or you risk overheating that can cause seizures and organ failure. Know first aid for overheating. Monitor this with a thermometer regularly.
- Never leave your chinchilla unsupervised inside of a rodent play ball where there is a high risk of overheating if you use one.
- Make sure a wheel is properly installed and properly constructed if you use one or your chin can die from it.
- Do not use a wire hay ball in a chinchilla cage. Ever.
- Limit treats to two raisins a day or equivalent. Less for kits. Too many treats can kill by causing digestive problems. Some chins don't need food treats and are happy with bits of sticks and toys.
- No berries of any kind. No fresh fruits or vegetables. Ever.
- Only feed high quality pellets and fresh green hay for normal diet. Pellets should not have fruits or other junk mixed in or it can cause health problems and tooth decay. Pellets not formulated for chinchillas can be toxic. (High quality rabbit food is okay)
- Check water levels daily and check to make sure the bottle spigot is working each day. Some water bottles are bad about failure to dispense or leaks.
- Always have wood available for chewing or you risk fatal tooth problems.
- If you ever have to give your chin antibiotics be prepared to hand feed if it goes off its food. A day without food can be fatal for a chinchilla because it can cause a chain of events leading to GI stasis which can be difficult to reverse.
- Always properly restrain your chinchilla when you are holding it or it can easily become injured if it struggles to get away.
- buying a chinchilla from a reputable breeder can significantly reduce the chances of your chinchilla having a fatal congenital disorder that causes an early death. Chinchillas normally stay healthy for about 10-15 years but I've heard some can live to be in their 20s. For those who have had a bad experience with pet store or rescue chins with health problems please remember this.
Although these are aren't necessarily life and death rules they can prevent behavior issues.
- Try to not disrupt chinchilla's normal sleep/wake patterns. Make sure artificial light is less intense than natural light by the cage.
- Do not chase or startle your chinchilla in its cage or outside of it.
- Try to keep a consistent schedule to minimize stress.
- Keep cage off of appliances and things that make noise.
- Introduce your chinchilla to things it does not like very slowly.
- A well socialized chinchilla will adapt to new environments faster than one who is not.
There is a free chinchilla care e-book available on this website if you're looking for a basic care guide with good tips:
http://www.huggablepets.com/huggablepets/freebook.shtml