Weight Base Power
Under 10kg
Under 22lbs
20
10.1kg - 25kg
22.1lbs - 55lbs
40
25.1kg - 50kg
55.1lbs - 110lbs
60
50.1kg - 100kg
110.1lbs - 220lbs
80
100.1kg - 200kg
220.1lbs - 440lbs
100
Over 200kg
Over 440lbs
120

Below are the Pokémon that get 40 power damage with Grass Knot/Low Kick used against them

No. Pic Name Type 1 Type 2
#002 Ivysaur
#005 Charmeleon
#008 Wartortle
#020 Raticate
#027 Sandshrew
#030 Nidorina
#033 Nidorino
#038 Ninetales
#040 Wigglytuff
#045 Vileplume
#049 Venomoth
#054 Psyduck
#058 Growlithe
#060 Poliwag
#061 Poliwhirl
#063 Abra
#066 Machop
#071 Victreebel
#074 Geodude
#083 Farfetch'd
#100 Voltorb
#117 Seadra
#118 Goldeen
#131 Lapras
#135 Jolteon
#140 Kabuto
#148 Dragonair
#153 Bayleef
#156 Quilava
#163 Hoothoot
#165 Ledyba
#170 Chinchou
#171 Lanturn
#178 Xatu
#180 Flaaffy
#190 Aipom
#213 Shuckle
#223 Remoraid
#225 Delibird
#228 Houndour
#239 Elekid
#240 Magby
#253 Grovyle
#256 Combusken
#261 Poochyena
#263 Zigzagoon
#268 Cascoon
#277 Swellow
#281 Kirlia
#287 Slakoth
#291 Ninjask
#293 Whismur
#300 Skitty
#302 Sableye
#303 Mawile
#307 Meditite
#309 Electrike
#313 Volbeat
#314 Illumise
#316 Gulpin
#318 Carvanha
#322 Numel
#328 Trapinch
#329 Vibrava
#334 Altaria
#340 Whiscash
#341 Corphish
#343 Baltoy
#345 Lileep
#347 Anorith
#352 Kecleon
#354 Banette
#355 Duskull
#360 Wynaut
#361 Snorunt
#368 Gorebyss
#369 Relicanth
#387 Turtwig
#391 Monferno
#394 Prinplup
#397 Staravia
#398 Staraptor
#399 Bidoof
#407 Roserade
#414 Mothim
#424 Ambipom
#426 Drifblim
#434 Stunky
#438 Bonsly
#439 Mime Jr.
#440 Happiny
#443 Gible
#447 Riolu
#451 Skorupi
#453 Croagunk
#457 Lumineon

 
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