I have two adorable bunnies that I got for Christmas last week. They were roughly the same size but in a week's time, I've noticed that my white rabbit (Blanco) has grown about twice his size but my gray (Sylvia) one just grew about 1/2 of her size. I'm so worried because recently, I notice the past few days that Blanco keeps growing but Sylvia's still the same.
They eat a lot, I always give them unlimited grass, their Vitakraft mix (taking out the corn,) some oats, portions of carrots and water spinach, and vitamins in their water dish.
Sylvia is also very active though and gets very excited when she sees me and I let her out the cage so I didn't want to think anything was wrong. However, just today, I peeked under her belly and saw that there's something that looks like poop stuck in her anus and some poop dirt stuck on the hair surrounding her anus. I started cleaning it but it's not that easy. I got about half of the poop dirt out but she keeps kicking, even as I sing her her lullaby.
I'm just worried if that's a sign of sickness in Sylvia. Cause when I checked Blanco's underbelly, his was spot clean, even his anus.
What does that mean and what should I do, guys? I'm a very worried momma.