Place it at the start of a pet reaction sequence, then follow with a cat meow for a back-and-forth between the animals, and finish with baby laughing for a final payoff. That order builds a small scene, keeps the focus on the pets, and gives the clip a clear ending.
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Heini is a short dog bark lasting about one second, a sharp, lively yelp from a dog that cuts straight through a quiet moment. It feels playful and alert at once, like a pet demanding attention or answering a knock at the door, with just enough cheek to make people smile. The burst is quick, clear and easy to recognise on a first listen.