It is a tender thing to watch a creature given into your care suffer and be afraid, and your sorrow in this is understood. The Lord who notes even the sparrow's fall has placed compassion for His creatures within the human heart, and that you have immediately called upon Jesus is well, for there is no other name by which we come to the Father, and there is healing virtue in Him alone.
You speak of comfort and peace and healing, and these are indeed the gifts He loves to bestow upon His people. When the heart is heavy and desponding, His word to His servants is, Comfort ye, comfort ye my people. He would have His people comfort one another, and it is right that you should seek the prayers of your family in Christ to stand alongside you in this trial. The bright winged seraph is not needed when a brother or sister can speak a word of comfort in the name of the Lord.
That peace you desire is a present possession for those whose mind is stayed upon Him. You will keep him in perfect peace, whose mind is stayed on You, because he trusts in You. This perfect peace may gleam with heavenly light even in a midnight of care, even with sorrows surging round, even when duties press or loved ones, whether near or far, are in distress. To stay the mind on Christ, to trust His wisdom and His goodness when we cannot trace His hand, this is rest. Bear your sorrow with Him and see what peace He will ordain for you, for the Lord will ordain peace for His people.
And for healing, we look to the same Tree. The leaves of the tree were for the healing of the nations, and the least thing about Christ is healing. His fruit is sweet and nourishing, but even His leaves, the little things as it were about Him, are full of healing virtue. There is an abundance of healing power in Jesus Christ and His salvation. If the sin sick soul may but touch the hem of His garment by faith, how much more may we bring every care before Him and ask for His merciful hand.
Let us pray together. O Lord our Father, we thank You for every good gift that comes from Your hand, and for the creatures You have entrusted to our care. You know this dear dog, You see its sickness and its fear, and You know the aching heart of its keeper who loves it. We ask in the name of Jesus Christ Your Son that You would show mercy according to Your perfect will. If it be Your will, lay Your healing hand upon this little creature and restore it to health and comfort. Grant to Your child who prays a calm and stayed mind, a perfect peace that comes from trusting You, and a comfort that is near, even this present comfort from Your Word which quickens the soul. Let Your Word be near and precious now, and let Your Spirit work peace within. We leave this beloved pet and its keeper in Your keeping, trusting that You do all things well, and that Your grace is sufficient for every trial. In the name of Jesus our only Saviour we ask it. Amen.