I also am going to repeat to seperate them when not supervised just for the size difference, even if they become best friends. Feed their meals separately even if it is a non issue just because of size difference. A lot walks and training sessions together help them want it to all work. Each needs their own quiet space to retreat to where they can get alone time.
As far as small dogs go King Charles Cavaliers have a heart of gold, incredibly easy going breed, fun loving, such a regal, friendly breed who can also watch over the house and alert to intruders. Even the worst bred- I would imagine are still saints and solid citizens it is deeply interwoven into their DNA. Love this breed just wish the hearts were healthier. It is their loving, gentle but strong solid natured heart is which defines the breed which is ironic their heart which is the biggest health issue challenge that seems like they can’t escape from. I had a King Charles her heart finally failed at 9 years old and it was heart breaking.
I have two Germans shepherds and a Chihuahua which and it has been working for a very long time. I understand this is not always the case and are many awful stories. I am so very grateful for the incredible journey of this trio. We did a lot of walks and training sessions together - the chihuahuas toys had to be put away as he **** bent on teaching the male shepherd pup lessons to stay away from his toys. No one was allowed to torment each other.