The Brown one is heavier and appears to be stoneware/terracotta, the black cat is made of a lighter pottery.
McCoy Cat Planters Vintage Pottery Ceramic Blue Matching Pair
Pair VTG Yellow Cat Planters Sitting Brush McCoy 5.5" Crouching 2.5" 1940's-50's
Cute Cat Plant Pots Set of 3 Ceramic Cat Planters with Tray Pastel Kawaii Decor
Pair Vintage Italian Ceramic Planters / Cachepots –White Relief Teardrop Pattern
STUNNING ITALIAN CERAMIC Pair Vintage Faux Burl Wood Marble Cachepot Planters
