Whilst checking my Pokémon, I saw one Pidgey with very small CP value in comparison to his brethren. I noticed his weight is smaller, and he has an "XS" mark (see the screenshot).

Is this special? Can I do something with it? Is it more valuable?

screenshot of an "XS" Pidgey


6 Answers 6


There is nothing particularly special about an extra small pokémon. Typically, smaller pokémon appear to start with lower CP values, but that is about it.

That said, there may be further medals that relate to the weight of a pokémon. For example, there is the Youngster medal.

enter image description here

  • 1
    I've not experienced XS Pokemon having higher or lower starting CPs than others. In fact, some XS Pokemon have had CPs that far surpassed their XL counterparts.
    – Kaz Wolfe
    Commented Jul 8, 2016 at 2:01
  • 7
    I love how their token replacement code isn't replacing tokens.
    – Ellesedil
    Commented Jul 14, 2016 at 18:32
  • @Ellesedil, I have absolutely no idea what your talking about
    – user106385
    Commented Jul 15, 2016 at 0:15
  • 3
    @Timelord64 he means the curly brackets here: 0ws.pw/zmeo.png
    – ave
    Commented Jul 15, 2016 at 0:24
  • Does Machop perchance have Low Kick available as a special? It would likely influence the damage Low Kick (and Grass Knot/Heavy Slam etc) do.
    – Linear
    Commented Jul 16, 2016 at 5:40

A Pokémon with an XS tag, for either weight or height, is a sign that this Pokémon has lower than average values for those stats. As was explored in this question, it appears that higher weight leads to higher health for two Pokémon of the same CP value. From this, one can conclude that a Pokémon with XL tags for height and weight is generally going to be a better choice than the same Pokémon with XS tags.

I've read in a few places that these tags also influence your Pokémon's moveset, although I haven't seen any evidence to back this up.

  • 2
    that's not true
    – Vic
    Commented Sep 3, 2016 at 17:33
  • I have noticed my XS vaporeon attack and dodge way faster than the XL one that is in the same CP range. The XL having better HP/stamina makes sense. You say the XL would be better, but that depends on which you value more, higher HP or the quicker attack and dodge.
    – BillyNair
    Commented Sep 29, 2016 at 0:10

Actually, the size has a lot to do with the Pokémon's stats in the game. I leveled up two Pidgeys until they were both at the same point on the CP meter. One was an XL and the other regular. The XL's CP was 79, while the other's was at 73. So imagine the margin between an XL and XS Pokémon. It could be a very big CP difference.

And to the above theory that an XL Pokémon requires more stardust and candy - it's simply not true. I have an XL and regular Venonat at the same spot on the CP meter and they both take 400 stardust and one candy to upgrade.


Smaller pokemons tend to have faster attack speeds than normal ones.

  • 1
    Do you have a source or some proof for this? Commented Jul 14, 2016 at 18:49
  • 1
    Personal experience. Had 2 gravelers, same attacks, roughly same cp. The heavy one was attacking like 1 per second, the lighter one was attacking like 3 per second. There are also reddit posts in silph road where people also posted this experience. I also experienced it with electabuzz too.
    – Esqarrouth
    Commented Jul 14, 2016 at 18:55
  • Would like to see some harder evidence of this, but sounds plausible from what I see from my experience too. My XS Vaporeon attacks super fast.
    – gitsitgo
    Commented Sep 16, 2016 at 16:12
  • Attack speed is only affected by the move itself and the player input e.g. if the player taps once every 3 sec, the move will be used less often. It has nothing to do with the Pokemon size
    – BGamer
    Commented Aug 19, 2019 at 15:08

If it is extra large it takes more stardust to power it up. For example: a normal size Weedle costs 200 + 1 candy, whereas my XL one takes 400 Stardust and 1 candy.

I'm still working on gym tests between the two after paying to get them to match their CPs together and testing HP difference now

  • 1
    Do you have a source for this? If their CPs are not equal how do you know that is not affecting how much stardust it costs?
    – Robotnik
    Commented Jul 8, 2016 at 4:21
  • CP does, in fact, alter required stardust. Higher CP requires more
    – user106385
    Commented Jul 13, 2016 at 3:07

I have two Pidgeotto and one is XS with more CP and health than the XL one. And to power it up my XS needs more stardust than my XL... YET, my XS Seaking does not need more stardust than my regular Seaking.... Same with all of my rattata... In conclusion I THINK (dont get me wrong) that it all depends on the CP of THAT kind of pokemon, maybe from this range to that rage needs this much stardust, ect. But varying of the kind of Pokemon.

  • This seems like it would be far more helpful as a comment.
    – user106385
    Commented Jul 13, 2016 at 3:08

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