Ontario Woman Shares Siberian Kitten Sprout’s Growth from 0.7 kg to Over 5 kg

Carly Thomas from Ontario adopted a tiny Siberian kitten named Sprout in May 2025, weighing about 0.7 kg (1.5 pounds). Over seven months, Sprout grew to approximately 5.4 kg (11-12 pounds), surprising his owner and gaining viral attention on Instagram. Siberian cats typically grow slowly, reaching full size around three years. Fans have praised Sprout's transformation, while Carly reflects fondly on his kitten stage.