Critter Nation Small Animal Cage Add-On Unit

List: $205.99
Today's savings: 20%

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Critter Nation Small Animal Cage Add-On Unit


In Stock. Usually Ships within 24 hours.

Shipping weight = 42.75 lbs.


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Product Summary:

Critter Nation Small Animal Cage Add-On Unit

Midwest Metal has taken the design of their popular Ferret Nation, and applied it to accommodate a variety of small pets such as rats, chinchillas, and sugar gliders. The Critter Nation's bar spacing is smaller to keep the smaller pets from escaping and getting injured. It's easy to assemble, with no tools required. Interlocking panels safely and securely lock in place without the use of any screws, nuts, or bolts.


  • Add-on can be placed on models 161 and 162 to expand your small animal's living quarters
  • Wide expanse shelf, full-width plastic pan floor to provide maximum play area and prevent dangerous falls
  • Swing-up locking ramp to secure sections for cleaning the cage, as well as feeding and separating critters
  • Critter-proof dual-locking door latches provide secure, easy one-handed operation
  • Height adjustable shelves with removable plastic insert for easy cleaning
  • Multiple attaching points for accessories such as hammocks, tubes, and toys
  • Includes pan, shelf, two ramps, two ramp covers
  • Sturdy square tube frame and wire construction for maximum critter security
  • Platinum Hammertone finish blends well with any décor
Item Specifications:

36"L x 25"W x 24½"H

Bar Spacing:

Item Number Model Number UPC
650429 163 027773015215

Product Reviews by Customers

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Browse 15 questions Browse 15 questions and 108 answers
Why did you choose this? Store
My 4 small rats need more room to play. Also I am trying to move the sleeping area up higher.
Thomas T on Nov 10, 2018
I have the main cage already for 3 female rats. I have recently acquired 2 males rats that someone had to get rid of. A person wanted the rats to feed to a snake. My wife decided to take them so they can live happily with affection from my wife and daughter
Michael S on Oct 15, 2018
My 4 small rats need more room to play. Also I am trying to move the sleeping area up higher.
Thomas T on Nov 10, 2018
Add on to our rabbit cage.
Stacy B on Oct 28, 2018
I have the main cage already for 3 female rats. I have recently acquired 2 males rats that someone had to get rid of. A person wanted the rats to feed to a snake. My wife decided to take them so they can live happily with affection from my wife and daughter
Michael S on Oct 15, 2018
Have the double cage and it's great. Adding another Chin, so want to provide more space to play.
mary j on Sep 12, 2018
Because my rats need more room and no one else seemed to have it but I feel scammed out of my money and really hope it arrives in good condition
Mariah H on Aug 5, 2018
adding on to my DCN for my Rat Habitat
Karen F on Jul 20, 2018
Great cage for Sugar Gliders. I like how the entire front of the cage opens and allows access for cleaning. My boys will have a double high, double wide now.
Scott P on May 12, 2018
Always good prices!
James E on Apr 18, 2018
I already own the bottom unit and the rats love it so I wanted to add more room for them!
Rachel C on Mar 22, 2018
Wanted more space. My friend Alea has the same set up
Brandy K on Feb 26, 2018
I have a single unit and need to add a level to deal with fighty adolescent degu boys! They could use more space anyway.
Angela A on Dec 25, 2017
Best price!
Adam C on Dec 17, 2017
I am adopting 6 babies, and I already have a single!
carlie s on Nov 16, 2017
To give my squirrels more room
Whitney A on Oct 17, 2017
I had already purchased the double cage unit and wanted more room for my 2 cats <br />to roam . I really like my other purchase, I thought it was well constructed.
Darlene C on Oct 3, 2017
Needed the extra cage for my rats, already have the single unit so the add on is perfect
Maeghan G on Aug 22, 2017
because I have 3 - 12 week old baby rats and just adopted 2 more yesterday and I can see now they will need more room quickly!
Chickey on Aug 7, 2017
More space for my rats!
Audrey D on Dec 26, 2016
Addition to Critter nation single unit.
Kim C on Dec 14, 2016
I have the single Critter Nation cage for a pet rats and I love it, they are great for trust training because you can sit with your hands in the cage and allow rat to get comfortable and more brave climbing onto you. Looking forward to fostering pet rats with my critter nation.
Angela R on Oct 14, 2016
The single unit critter nation has been great for my rats, so I thought it was time to buy more from the brand and make their house even bigger and better!
Tanya K on Sep 27, 2016
Would like to make a 3rd floor to one of the cages
Teresa P on Sep 9, 2016
My squirrels love it!
charles c on Aug 1, 2016
Because I want to be able to selectively control my rats offspring.
Ingrid S on Jul 13, 2016
Rat got preggo so need to prepare!
Savannah L on Jun 19, 2016
we're upgrading our ratties from a rat manor (hardly) to a rat palace. :-)
joanna b on Jun 10, 2016
I currently have a double critter nation for my 6 female rats. I want them to have more space (:
Madison B on Jun 2, 2016
My rats were not getting along so needed to separate them without taking over more of my home.
Megan F on May 18, 2016
We have the base unit and wanted more space for our pets.
Suzie M on Apr 10, 2016
I already have the bottom cage and want to expand. This cage has been well worth the price paid in ease in cleaning alone, but my rats love it and so do I.
Debra B on Apr 8, 2016
Critter Nation is the best cage available in the US!
Connie K on Mar 30, 2016
Why not have more room for your little ferret friends to run around?
Desiree B on Mar 3, 2016
Great cage, great reviews, Super good price
Paul V on Feb 19, 2016
Best cage for rats and best quality
CHRISTA R on Feb 10, 2016
Suggested by friend. Have 6 Critter Nation Small Animal Cages (for Chinchillas). They work fine.
Phillip K on Feb 1, 2016
safe, roomy, affordable, well made
Elise B on Jan 25, 2016
800PETSUPPLIES was the only place that had this Critter Nation Add On unit in stock!
Michael K on Jan 25, 2016
Great price!
Kim K on Jan 16, 2016
Adding on to a double critter nation for a pair of sugar gliders. With a three level unit, they will essentiall have a palace
Lenette D on Jan 16, 2016
Love this cage! Ordered my second one for sugar gliders. The ramps can be dangerous for other animals, broken legs have occurred from not using the proper ramp covers, however I remove the shelves and ramps. The bar spacing is small, the cage is huge, and I love the expansion options it offers. Great value!
Shayna B on Nov 24, 2015
The Midwest Critter Nation cage is the best cage out there for pet rats! I wanted to add on a 3rd story to my double unit since rats love to climb and be on the top area! This will give them more space and it is so easy to clean!
Joyce T on Oct 28, 2015
These are the best rat cages(; I have the single unit and I love it, so I went ahead and purchased this one! HIGHLY RECOMMENDED!!
Cyrille C on Sep 9, 2015
I have the Critter Nation cage (bottom unit) and it's such an excellent cage that I decided to add to my ratties' home!
Michele D on Jul 20, 2015
to give a little extra room and level to our two roomies (cho-cho and andy) chinchillas.
Debra F on Jul 19, 2015
will make 3 levels for my cat who is urinating all over my house
JILL B on Jul 17, 2015
Best prices
Michelle R on Jul 11, 2015
add on to my existing single unit
Christie H on Jul 11, 2015
I have a pet rat named kaia. She really needs a bigger cage. heard about this place on the rat lovers group im in on FB.
Leslie L on Jul 5, 2015
I bought this to add to my bottom cage... Great cages, very roomy and solid.. Rats love this cage..
Marie H on Jun 14, 2015
We bought another ferret. And I love the one that gave to my daughter.
silvia O on Jun 5, 2015
Add on to our rabbit cage.
Stacy B on Oct 28, 2018
Have the double cage and it's great. Adding another Chin, so want to provide more space to play.
mary j on Sep 12, 2018
Does this come in white?
A shopper on May 11, 2018
BEST ANSWER: No, I am sorry this is not available in white.
Can the add on cage be used by itself?
A shopper on May 1, 2018
BEST ANSWER: You would have to do a lot to use it as one cage cause the add on has the open space which is a hole so the bottom isn't complete and there isn't a stand on it either so to use as one cage you would have to find something to cover up the hole other waise the pet can get out. Also you would have to get a solid tray to cover up the patch where the hole was cut out so really it'll be worth getting a one level than buy the stuff to fixs it.i have a triple and each cage is its own for I turned mine into individual cages but it took a lot of work
we are traveling and the dimensions are perfect. can you use this as a single unit?
Amy B on Mar 2, 2018
BEST ANSWER: This is just the add-on unit, it cannot be used as a single unit.
Does this come with the shelf & covered ramp like the main unit does?
Lizzy on Oct 18, 2017
BEST ANSWER: Yes, Includes pan, shelf, two ramps, two ramp covers
is it possible to put two add on units on top of each other?
jishwa on May 19, 2017
BEST ANSWER: I'm guessing you can't because the add-on uses the top from the regular Critter Nation Cage.( Single or double.) The Nation cages are definitely the best there are as far as I'm concerned! I will never have anything else!!!
can I close the door btween layers of cages?
Theresa V on Apr 7, 2017
BEST ANSWER: The add on unit is just like one section of your Critter Nation Cage. Your Critter Nation cage is just two add on units together. When you put a new add on unit on top you will have three exact pieces. The door is on the front just like the two bottom pieces. You can leave the bottom tray on the new top section in place. It has a small opening for your pet to get to the original Critter Nation cage you have or you can remove the tray and have it all open. There is no "door" except on the front of the add on. Hope this answers your question.
does the stand come with??
Theresa V on Apr 7, 2017
BEST ANSWER: The add on does not come with stand. You would need to get the single CNC. The add on goes on the top or you can get a double.
May I add this on top of the cage that already has two parts? I'd like to add another 'story' for my chins. Thank you for having something living room ready.
EfromNLV on Dec 30, 2016
BEST ANSWER: Yes you can do this. I have the 3 units (single on top of the double unit) stacked for my rats and they love it. It does end up being pretty tall so be sure to check your ceiling height.
How does the critter nation add-on unit clip on to the original critter nation? Also, where do I find the model number in my cage?
A shopper on Dec 21, 2016
BEST ANSWER: To add a unit on you simply remove the top of the original unit, set the add on ontop and then put the top on the add on. The little legs on the add on should slide into the top of the original unit.

As for model number, there are only two models, the critter nation or the ferret nation. There are no numbers on the cage that i am aware of. You cant mix the two. If you have critter nation, then order the critter nation add on.
Is it safe for ginea pigs?
Ashley S on Oct 18, 2016
BEST ANSWER: Piggies need more horizontal space rather then vertical space. Also, its not that guinea pigs aren't athletic, but they aren't climbers so much and I would be very concerned about them falling off the shelves. I would suggest the Midwest Guinea Pig Habitat Plus which can be purchased in multiples, merged together and made into a great cage for less then what this cage would be. Ive linked it below
Are the pans metal or plastic ?
A shopper on Aug 27, 2016
BEST ANSWER: I bought the add on critter nation cage & it's very sturdy with a heavy plastic tray. I have pet ratties & they haven't chewed the tray. Very pleased with this cage.
Can this be a home for guinea pigs?
Janelle F on May 4, 2016
BEST ANSWER: It is not suitable for guinea pigs and I would advise against it. I own guinea pigs and I would not keep them in something this small.. guinea pigs need more floor space and aren't meant to be going up to higher levels, etc. plus the bedding would just fall out all over the place. so I would have to say NO.
Can you make this 3 high?
Susan D on Apr 25, 2016
BEST ANSWER: Yes you can make a palace of three high. This is an amazing cage .
what model s can you use this with?
A shopper on Aug 31, 2015
BEST ANSWER: You can add it on to the Ferret Nation 181 or 182 and the critter nation 161 or 162. It comes with the hole cut out bottom pan so if you are trying to have 3 separate levels make sure to order a solid pan to go with it. I have a triple cage made with the Ferret Nation 182 and Critter Nation 163(add on unit) They easily fit together.