Why do creatures only grow to certain sizes?

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Basically i just saw a post about a massive black widow spider living in an electrical box and it got me thinking. Why is growth limited to a “general size” in most cases? Is it just natural genetic code that says ” You will only grow this much and no more”, or does it all depend on stuff like environment, nutrition, risk factors, etc?

In: Biology

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Anonymous 0 Comments

this video touches on dogs specifically. but in general larger size requires more caloric intake. so creatures found an equilibrium with what their environment provides. https://youtu.be/tlp8pa1Ry9A?si=D0oRAhOOpJ9yVihn

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