James Middleton celebrated turning 34 on Thursday, and welcomed a new member of the family while he was at it.MORE: James Middleton makes rare comment on sister Kate's latest announcementIn a snap, Kate Middleton's brother posed with his dog Ella and a new lamb, Captain, inside his land rover.He also paid tribute to Ella, who helped him throughout his battles with clinical depression and with the start of his relationship to fiancée Alizée Thevenet.WATCH: James Middleton celebrates puppy's