A decade-old cactus could only measure an inch in height. One might not produce flowers until it's 70 years old. And it might need to reach the century mark before sprouting an arm.

Images of the unique cactus have circulated online and on social media for quite a while, each time eliciting curious comments. Here's what to know about the T. rex cactus and what happened to it.

Arizona was obviously the only state that selected the cactus as the emoji that best represents it. Neighboring states California picked the bear, Utah a bee, Nevada a slot machine and New Mexico ...