Hi Nick,
I have two 14 month old Jack Russells (brothers) and we have had various behavioural issues through the puppy stages, but mostly they have become very well behaved dogs. However two issues I would like to curb with my dogs are:
Dylan has a habit of not going to the toilet outside and instead choosing to do it inside, I can't understand as he was ever so good at understanding the outside was the toilet and not inside when I first started making them go outside after their jabs at 10 weeks old. However recently (last 8 ish weeks) he just sits by the french doors and won't go up onto the lawn to go to the toilet like Riley does, I end up letting Riley back in as I have know hes been to the loo, and leaving Dylan outside as he still hasnt moved from the french doors and I know if I let him back in, I will be shortly cleaning up a mess!
Sometimes I have to leave Dylan outside for 20-30 minutes before eventually he goes to the loo and I let him back in. The dogs get let out roughly every 2-3 hours to go to the loo, sometimes I think Dylan must not need the loo so I let him back in and then 5 minutes later he has gone into his crate and wet his bed which infuriates me as I must wash it 2-3 times a week because of this problem.
Dylan usually follows what Riley does, but why he can't just go to the loo in the garden like Riley does straight away instead of messing about and sitting by the door for ages when I know he needs to go is beyond me, he didnt used to be like this!
The other issue is Riley, he is such a hyper dog, never gets tired and is always bouncing around. Unfortunately he is so hyper when people come into the house that people are scared of him jumping at them and nipping their hands, I tell him 'DOWN' and 'CALM' which is two instructions I give him when hes getting too excited and over bearing, but when people are in the room and not just me, he takes little notice of me and just does exactly as he likes and continues to jump up at people and on occasion nip at their hands.
One day I was so annoyed at Riley that I put him in the crate so he could no longer jump up at my mum, and he was whining as he was upset that I had spoiled his fun (even though he had been told several times not to jump at her) so eventually after 10 minutes of calm time, I let him out and told him calm before I let him past me, and straight away he jumped at my mum!!! So back in the crate he went.. but nothing stops him unless I crate him and its a shame as people get fed up of him and don't want to try and pet him as much as he is such a nuisance jumping up. He doesnt jump up at me because I ignore him if he missbehaves, and if he jumps at me I tell him off and he seems to know I don't like it, but I can't stop him from doing it to anyone else

Any instructions as to how to solve either of these issues??
Any help would be greatly appreciated.
Many Thanks
Anna