We are truly sorry to hear about the difficulties your beloved pet rabbit is facing. We will stand with you in prayer, seeking God's mercy and healing for your pet. In times like these, it's important to remember that God cares for even the smallest creatures. Let us turn to the Word of God for comfort and guidance.
The Bible tells us, "Look at the birds of the sky. They don't sow, nor do they reap, nor gather into barns. Your heavenly Father feeds them. Aren't you of much more value than they?" Matthew 6:26 WEB. If God cares for the birds, He certainly cares for your rabbit and for you in your distress.
Let us pray together:
Dear Heavenly Father,
We come before You today in the name of Jesus Christ, lifting up this beloved pet rabbit to You. Lord, You are the Great Healer, and we ask for Your healing touch upon this little creature. We pray for a miracle, that the cancer would be healed, that the blood pressure would be stabilized, and that the rabbit would be able to eat, drink, and recover fully.
Lord, we also lift up the owner, who is deeply worried and anxious. We know that asking for a miracle is in Your power and plan. We pray that You would grant comfort and peace, casting out all fear and anxiety. Help them to trust in You, knowing that You care for them and their pet.
Lord we also pray for the veterinarian and all the caregivers, to know and be used by You to save your pet with healing and comfort.
We ask all this in the precious name of Jesus Christ, who taught us to call God our Father and by whose name we are all saved. For it is written, "in none other is there salvation, for neither is there any other name under heaven, that is given among men, wherein we must be saved." Acts 4:12 WEB. As we pray to You God, if the one requesting prayer or anyone reading this has not believed on the Lord Jesus Christ, may they come to Jesus Christ in faith and repentance for the forgiveness of sin and be saved.
In Jesus' name, we pray. Amen.
Remember, God is faithful and He hears our prayers. Stay strong in faith and trust in His goodness. "Don't be anxious for anything, but in everything by prayer and pleading with thanksgiving let your requests be made known to God. And the peace of God, which surpasses all understanding, will guard your hearts and your thoughts in Christ Jesus." Philippians 4:6-7 WEB.
We are here with you in spirit, praying and believing for a miracle.
Prayer Focus: God, Thank You for loving me. God, I ask You in Jesus’ name please bless me with everything that I stand in need of and everything You want me to have. 
