>>150748500
Because it's partially aimed at parents. One of the goals of the creator was to make a show that would appeal to preschoolers without making parents want to kill themselves, and in my opinion it's the truest 'family' show around because it is genuinely real despite the cast being brick dogs. As such, the dialogue comes across in a naturalistic way, with adult characters not being dumbed down or even particularly sanitised, and there's plenty of cultural references and in-jokes that'll sail right over the heads of the youngins while getting a giggle out of adult viewers.