Channel dog cat

package main

import (
    "fmt"
    "sync"
)

func printAnimal(wg *sync.WaitGroup, cat chan bool, dog chan bool, animal string, times int) {
    defer wg.Done()
    for i := 0; i < times; i++ {
        <-cat
        fmt.Println(animal)
        dog <- true
    }
}

func main() {
    var wg sync.WaitGroup
    wg.Add(2)

    cat := make(chan bool, 1)
    dog := make(chan bool, 1)

    cat <- true

    go printAnimal(&wg, cat, dog, "cat", 10)
    go printAnimal(&wg, dog, cat, "dog", 10)

    wg.Wait()
}