Is it normal as an adult to have temper tantrums?

Like my ex girlfriend would completely normalize it, she had another one last night cause we temporarily still live together because she’s ok with the dogs pooping and peeing everywhere in the apartment and when at work I wanted to keep int he dog in the crate. There is urine on the bed, couch, it’s everywhere and there’s always shit everywhere one day when I came home one of the dogs had shit on her paws and jumped up and it smeared on me. She was having a full meltdown because she was concerned about the barking that would happen if the dog was in the crate but no serious concern about potential sickness constantly being exposed to animal urine and feces

Is it normal as an adult to have temper tantrums?
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