No doubt about that, Sonia!!We did 2 adoptions here: the first one was Inka who was 9 weeks. The second one was Zazou who was 1 year old then.
Out of experience, I MUST say that adopting Inka was A LOT easier! Maya accepted Inka as her baby and washed her constantly.
With Zazou, I brought another adult into the household. It is normal that this much harder to accept to the others!

So, go and get that kitten!!! YIPPIE PEPITO, you are a BIG brother now!!

Hey, you didn't take any pics yet???