The best replacement for older dog is puppy.

The best alternatives to older dog are rated as following:
★★★★★  puppy

Your alternative for older dog is not listed? Suggest!
Speaking about older dog, one probably shouldn't forget about new puppy.

Other search terms related to older dog and their ratings are:
★★★★★ new puppy
You have in mind a companion for older dog and it is not yet here? Propose!



Google Trends

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older dog
puppy