All the dogs I've had love watermelon. It's a really great treat and hydrates them great. but the watermelon has to at least be decently sweet (lol the ones that are too ripe or too green, they don't like as much) We also be sure to remove any seeds before giving them any. Hadn't tried freezing them before, but it sounds good
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R.I.P. Mick & Mandy (before 2010), Mila - 4/3/15, Chloe - 2/18/16, Kimchi - 6/2/2021