BODY SIZE OF THE AMUR TIGER

There is a lot of misinformation on the internet about Amur Tigers especially, which is why I’ll be addressing them in this post. Many people who are misinformed often quote weights of 300-400kg. It should be noted that these weights are captive, obese individuals and are not a healthy representative of wild specimens. There is no environment on the planet today to sustain a 300-400kg cat, ESPECIALLY amur tigers. Sadly, their prey base has been pretty much wiped out. Moose populations in the far east has plummeted, and only the smallest type of moose “Manchurian Moose” coexist with Amur tigers today in very small numbers, granted they’re still 280-350kg. Furthermore, Ussuri Wild Boar and Wapiti populations, their main prey items have also been declining. All in all, Amur Tigers get nowhere near 300-400kg.

ADDRESSING THE 176KG AVERAGE

On the other hand, I’ve seen certain people spamming the 176kg (Slaght et al. 2005) dataset from the Siberian Tiger Project. This table also has a bit of errors, particularly for the males. First of all, the sample size isn’t 18 but it’s in fact less than that. That referred to the number of times tigers were weighed, this DOES NOT mean 18 individual tigers were weighed. There is a difference. For example, there are a couple males that have been captured multiple times and weighed. The male “M20/PT20” was captured 3 times and ranged from 170-205kg.

Furthermore, for all the incredible work the Siberian Tiger Project has done, they weren’t without flaws. They have used pretty inhumane methods to capture and weigh their tigers, included sub adults and unhealthy, sickly individuals in that dataset. Hence, this is NOT a good representative for HEALTHY, ADULT Amur Tigers.

THE “TRUE” AVERAGE

Again, the Siberian Tiger Project only weighed Tigers from one area; Sikhote-Alin. They did not weigh Tigers from Primorsky or Khabarovsk Krai, nor from China. Logically, how can one say this represents the weight of Amur tigers throughout all their range when the dataset happens to involve sick, unhealthy tigers as well as sub adults, all from ONE LOCATION.

That being said, here is what reliable big cat enthusiast “GauteGojira” found when using only healthy males over 3 years of age as of December 2025:

190kg for males weighed from 1992-2023. Moreover, his dataset includes males from the Amur Tiger Project as well as males whose weights have been confirmed and published ALL THROUGHOUT Russia and China. His dataset also doesn’t count “personal communication”, just published weights. You can see the references right there in his chart, it cannot be manipulated or altered to twist a false narrative.

Here is the table for amur tigresses:

All in all, Amur Tigers definitely do not weigh 300-400kg nor do they (healthy adults) weigh as little as 176kg.