In Pokémon Let’s Go Pikachu and Let’s Go Eevee, your partner Pokémon will look a little different depending on whether it’s a male or female. Regular Eevee don’t look any different, regardless of whether they are male or female. But if you get a female Eevee as your partner, you’ll find that its tail seems to be marked by a heart-like pattern. This is only the case for partner Eevee. The official mascot version of female Eevee officially made its debut at the first-ever Eevee Outbreak in Japan:
Source: @project_eevee
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